Calculators are often seen as straightforward tools for crunching numbers, but they can also be the basis for some fun and challenging riddles! Whether you’re a math enthusiast or just looking for a clever way to pass the time, these calculator-themed riddles will test your problem-solving skills and spark your curiosity.
From simple arithmetic to more complex equations, each riddle is designed to make you think outside the box. Let’s dive into these 301 calculator riddles and see how many you can solve!
Basic Arithmetic Challenges
- What is 5 + 7? 🤔
Answer: 12 - If you subtract 8 from 15, what do you get? 🧮
Answer: 7 - Multiply 6 by 4. What’s the result? ✖️
Answer: 24 - What is 9 divided by 3? ➗
Answer: 3 - Add 11 to 13. What do you get? ➕
Answer: 24 - Subtract 9 from 20. What’s the answer? 🔢
Answer: 11 - What is 8 times 7? 🔍
Answer: 56 - Divide 36 by 6. What do you get? 💡
Answer: 6 - Add 14 and 9 together. What’s the sum? 🔢
Answer: 23 - Subtract 5 from 18. What’s the result? 🧮
Answer: 13 - What is 12 multiplied by 2? ✖️
Answer: 24 - If you divide 45 by 5, what’s the result? ➗
Answer: 9 - What is 7 + 8? 🤔
Answer: 15 - Subtract 10 from 30. What’s left? 🔢
Answer: 20 - What is 3 times 9? 🔍
Answer: 27 - Divide 72 by 8. What do you get? 💡
Answer: 9 - Add 23 to 17. What’s the result? ➕
Answer: 40 - Subtract 4 from 16. What’s the answer? 🧮
Answer: 12 - Multiply 5 by 5. What do you get? ✖️
Answer: 25 - What is 100 divided by 4? ➗
Answer: 25 - Add 18 and 22 together. What’s the sum? 🔢
Answer: 40 - Subtract 7 from 30. What’s left? 🧮
Answer: 23 - What is 9 times 6? 🔍
Answer: 54 - Divide 64 by 8. What’s the result? 💡
Answer: 8 - Add 29 to 11. What do you get? ➕
Answer: 40 - Subtract 12 from 25. What’s the answer? 🔢
Answer: 13 - What is 4 times 7? ✖️
Answer: 28 - Divide 56 by 7. What’s the result? ➗
Answer: 8 - Add 35 and 15 together. What’s the sum? 🔢
Answer: 50 - Subtract 3 from 20. What’s left? 🧮
Answer: 17
Number Patterns and Sequences
- What comes next in the sequence: 2, 4, 6, 8, ? 🔢
Answer: 10 - If the pattern is 1, 4, 9, 16, what’s the next number? 🧮
Answer: 25 - What’s the next number in this sequence: 5, 10, 15, 20, ? 🔍
Answer: 25 - Find the next number: 3, 6, 12, 24, ? ✨
Answer: 48 - What follows in the series: 2, 5, 10, 17, ? 🧠
Answer: 26 - Complete the pattern: 1, 3, 6, 10, 15, ? 🔢
Answer: 21 - What’s the next number in this sequence: 7, 14, 28, 56, ? 🔄
Answer: 112 - Find the missing number: 2, 5, 10, 17, 26, ? 📏
Answer: 37 - What comes next: 1, 2, 4, 8, 16, ? 🔍
Answer: 32 - What’s the next number: 9, 18, 27, 36, ? 🔢
Answer: 45 - Complete the sequence: 11, 22, 33, 44, ? 🔢
Answer: 55 - What’s the next in the pattern: 1, 8, 27, 64, ? 🧠
Answer: 125 - Find the next number: 5, 15, 30, 50, ? 🧮
Answer: 75 - What follows: 4, 8, 16, 32, ? 🔄
Answer: 64 - Complete the series: 10, 20, 40, 80, ? 🧠
Answer: 160 - Find the next number: 12, 24, 48, 96, ? 📏
Answer: 192 - What comes next in this sequence: 5, 25, 125, ? 🔢
Answer: 625 - Complete the pattern: 3, 9, 27, 81, ? 🧮
Answer: 243 - What’s the next number: 1, 3, 7, 15, ? 🔍
Answer: 31 - Find the missing number: 6, 12, 24, 48, ? 🔢
Answer: 96 - What follows: 2, 8, 18, 32, ? 🔢
Answer: 50 - Complete the sequence: 10, 20, 30, 40, ? 🔢
Answer: 50 - Find the next number: 3, 12, 27, 48, ? 🔍
Answer: 75 - What comes next: 7, 14, 28, 56, ? 🔢
Answer: 112 - What’s the next number: 4, 16, 36, 64, ? 🧠
Answer: 100 - Complete the pattern: 1, 4, 9, 16, ? 🔢
Answer: 25 - Find the missing number: 3, 6, 12, 24, 48, ? 🔄
Answer: 96 - What follows: 2, 6, 12, 20, ? 🧮
Answer: 30 - Complete the sequence: 11, 22, 33, 44, ? 🔢
Answer: 55 - What’s the next number: 7, 14, 21, 28, ? 🔍
Answer: 35
Calculator Puzzles
- If you press 7 followed by 8, what do you get? 🧮
Answer: 78 - What is the result of pressing 1, 2, and then =? 🔢
Answer: 12 - Enter 9, then 3, and hit +. What’s the display? 💡
Answer: 12 - Press 5, then 5, and hit ×. What do you see? 🔢
Answer: 55 - What do you get if you press 6, then 7, and ÷? ➗
Answer: 0.7 - If you press 1, 0, 0, then ÷, what’s displayed? 🔢
Answer: 0 - Enter 4, 8, and press +. What do you get? 🔍
Answer: 12 - What’s the result of pressing 3, 2, and ×? ✖️
Answer: 6 - If you hit 5, 5, and then ÷, what’s the display? 🔢
Answer: 1 - Enter 8, 4, and then =. What do you see? 🧮
Answer: 84 - Press 7, then 1, and +. What’s the result? 🔢
Answer: 8 - What do you get if you enter 9, 2, and ×? 🔢
Answer: 18 - If you press 2, 2, and =, what’s displayed? 🔢
Answer: 22 - Enter 1, 9, and hit ÷. What’s the result? ➗
Answer: 1 - What do you get if you press 4, 5, and ÷? 🔢
Answer: 0.8 - Press 3, 3, and then =. What’s displayed? 🔢
Answer: 33 - Enter 6, 6, and press +. What’s the result? 🧮
Answer: 12 - What do you get if you press 7, 8, and ÷? 🔢
Answer: 0.875 - Press 1, 5, and hit ×. What’s the display? 🔢
Answer: 15 - Enter 2, 3, and then =. What’s displayed? 🧠
Answer: 23 - What’s the result of pressing 9, 6, and +? 🔢
Answer: 15 - Press 8, 1, and hit ÷. What’s the display? 🔢
Answer: 8.1 - Enter 5, 5, and then +. What do you get? 🔢
Answer: 10 - If you press 3, 7, and =, what’s displayed? 🔢
Answer: 37 - Press 4, 6, and hit ÷. What’s the result? 🔢
Answer: 0.6667 - What’s the result of pressing 2, 5, and +? 🧮
Answer: 7 - Enter 1, 8, and hit ×. What do you get? 🔢
Answer: 18 - Press 7, 9, and then ÷. What’s the result? 🔢
Answer: 0.735 - If you press 4, 9, and =, what’s displayed? 🧮
Answer: 49 - What’s the result of pressing 3, 8, and +? 🔢
Answer: 11
Complex Calculations
- What is 12 squared? 🧠
Answer: 144 - Calculate 15% of 200. 🧮
Answer: 30 - What’s the square root of 81? 🧮
Answer: 9 - What is 5 to the power of 3? 🔢
Answer: 125 - If you divide 144 by 12, what do you get? 🔢
Answer: 12 - Calculate the result of 20 × 15. 🔢
Answer: 300 - What’s 25% of 80? 🧠
Answer: 20 - Find the value of 7^2 + 5^2. 🧮
Answer: 74 - What is the result of 50 ÷ 5 + 8? 🔢
Answer: 18 - Calculate the product of 9 and 11. 🔢
Answer: 99 - What’s 8 cubed? 🧠
Answer: 512 - Find the result of 100 – (5 × 6). 🔢
Answer: 70 - Calculate 3^4. 🧠
Answer: 81 - What is the result of 56 ÷ (7 – 2)? 🔢
Answer: 11.2 - Find the square root of 256. 🧠
Answer: 16 - What’s 45% of 150? 🧮
Answer: 67.5 - Calculate 18 × (3 + 2). 🔢
Answer: 90 - What is 12 cubed? 🧠
Answer: 1728 - Find the result of (14 + 6) × 5. 🔢
Answer: 100 - Calculate 50 ÷ (8 – 3). 🧠
Answer: 10 - What’s 9 squared? 🧮
Answer: 81 - Find the value of 7 × (4 + 3). 🔢
Answer: 49 - Calculate 3^5. 🧠
Answer: 243 - What is the result of 36 ÷ 4? 🔢
Answer: 9 - Find the value of (5 × 6) – 8. 🔢
Answer: 22 - What is 10% of 250? 🧠
Answer: 25 - Calculate 4^3. 🧠
Answer: 64 - What’s 7 squared plus 3? 🔢
Answer: 52 - Find the result of 100 ÷ (5 × 2). 🧮
Answer: 10 - What is 15% of 60? 🧠
Answer: 9
Mathematical Operations
- Add 45 to 55. 🔢
Answer: 100 - Subtract 22 from 75. 🧮
Answer: 53 - Multiply 8 by 7. 🔢
Answer: 56 - Divide 60 by 4. 🔢
Answer: 15 - What is 9 plus 8? 🧠
Answer: 17 - Calculate 12 – 7. 🧮
Answer: 5 - Multiply 6 by 9. 🔢
Answer: 54 - What’s 100 divided by 5? 🧠
Answer: 20 - Add 14 and 29. 🔢
Answer: 43 - Subtract 16 from 80. 🧮
Answer: 64 - Multiply 7 by 5. 🔢
Answer: 35 - What is 60 divided by 3? 🔢
Answer: 20 - Add 23 and 17. 🔢
Answer: 40 - Subtract 9 from 50. 🧮
Answer: 41 - Multiply 4 by 11. 🔢
Answer: 44 - What’s 84 divided by 7? 🔢
Answer: 12 - Add 35 to 45. 🔢
Answer: 80 - Subtract 5 from 30. 🧮
Answer: 25 - Multiply 3 by 12. 🔢
Answer: 36 - Divide 72 by 8. 🔢
Answer: 9 - Add 18 and 25. 🔢
Answer: 43 - Subtract 8 from 50. 🧮
Answer: 42 - Multiply 5 by 9. 🔢
Answer: 45 - What is 81 divided by 9? 🔢
Answer: 9 - Add 22 and 33. 🔢
Answer: 55 - Subtract 7 from 40. 🧮
Answer: 33 - Multiply 6 by 8. 🔢
Answer: 48 - What’s 100 divided by 4? 🔢
Answer: 25 - Add 21 and 29. 🔢
Answer: 50 - Subtract 15 from 75. 🧮
Answer: 60
Number Patterns
- What’s the next number in the sequence 2, 4, 6, 8? 🔢
Answer: 10 - Complete the sequence: 3, 6, 9, 12, ? 🧮
Answer: 15 - What comes next: 1, 1, 2, 3, 5, ? 🔢
Answer: 8 - Find the next number: 10, 20, 30, ? 🔢
Answer: 40 - What’s the next number in 5, 10, 15, 20, ? 🔢
Answer: 25 - Complete the sequence: 7, 14, 21, 28, ? 🔢
Answer: 35 - What comes next: 11, 22, 33, 44, ? 🔢
Answer: 55 - Find the next number in the series 1, 4, 9, 16, ? 🔢
Answer: 25 - What’s the next number: 2, 5, 10, 17, ? 🔢
Answer: 26 - Complete the sequence: 8, 16, 24, 32, ? 🔢
Answer: 40 - What comes next: 5, 7, 11, 17, ? 🔢
Answer: 25 - Find the next number: 12, 24, 36, 48, ? 🔢
Answer: 60 - What’s the next number in 3, 9, 27, 81, ? 🔢
Answer: 243 - Complete the sequence: 2, 5, 10, 17, ? 🔢
Answer: 26 - What comes next: 4, 8, 16, 32, ? 🔢
Answer: 64 - Find the next number in 6, 12, 24, 48, ? 🔢
Answer: 96 - What’s the next number: 1, 8, 27, 64, ? 🔢
Answer: 125 - Complete the sequence: 3, 12, 27, 48, ? 🔢
Answer: 75 - What comes next: 9, 18, 27, 36, ? 🔢
Answer: 45 - Find the next number in 1, 2, 4, 8, ? 🔢
Answer: 16 - What’s the next number: 2, 6, 12, 20, ? 🔢
Answer: 30 - Complete the sequence: 7, 21, 35, 49, ? 🔢
Answer: 63 - What comes next: 11, 13, 17, 19, ? 🔢
Answer: 23 - Find the next number: 14, 28, 42, 56, ? 🔢
Answer: 70 - What’s the next number in 5, 15, 30, 50, ? 🔢
Answer: 75 - Complete the sequence: 9, 18, 27, 36, ? 🔢
Answer: 45 - What comes next: 6, 15, 24, 33, ? 🔢
Answer: 42 - Find the next number: 4, 16, 36, 64, ? 🔢
Answer: 100 - What’s the next number in 1, 3, 6, 10, ? 🔢
Answer: 15 - Complete the sequence: 8, 17, 28, 41, ? 🔢
Answer: 56
Arithmetic Tricks
- What’s 9 × 11? 🔢
Answer: 99 - Calculate 7 × 14. 🔢
Answer: 98 - What’s 15 ÷ 3? 🔢
Answer: 5 - What is 21 + 14? 🔢
Answer: 35 - Calculate 18 × 5. 🔢
Answer: 90 - What’s 100 ÷ 4? 🔢
Answer: 25 - What’s 22 + 8? 🔢
Answer: 30 - Calculate 9 ÷ 3. 🔢
Answer: 3 - What is 7 × 8? 🔢
Answer: 56 - Find the result of 50 – 15. 🔢
Answer: 35 - What’s 14 × 6? 🔢
Answer: 84 - Calculate 25 ÷ 5. 🔢
Answer: 5 - What’s 30 – 12? 🔢
Answer: 18 - Find the result of 48 ÷ 6. 🔢
Answer: 8 - What is 11 × 9? 🔢
Answer: 99 - Calculate 12 × 8. 🔢
Answer: 96 - What’s 50 ÷ 10? 🔢
Answer: 5 - Find the result of 75 – 20. 🔢
Answer: 55 - What’s 20 × 3? 🔢
Answer: 60 - Calculate 24 ÷ 4. 🔢
Answer: 6 - What’s 18 ÷ 2? 🔢
Answer: 9 - Find the result of 65 – 30. 🔢
Answer: 35 - What’s 9 × 5? 🔢
Answer: 45 - Calculate 40 ÷ 8. 🔢
Answer: 5 - What’s 33 + 22? 🔢
Answer: 55 - Find the result of 42 ÷ 6. 🔢
Answer: 7 - What’s 27 × 4? 🔢
Answer: 108 - Calculate 45 – 20. 🔢
Answer: 25 - What’s 8 × 7? 🔢
Answer: 56 - Find the result of 56 ÷ 8. 🔢
Answer: 7
Decimal Calculations
- What’s 0.5 + 0.75? 🔢
Answer: 1.25 - Calculate 1.2 × 3.5. 🔢
Answer: 4.2 - What’s 4.8 ÷ 1.2? 🔢
Answer: 4 - Find the result of 5.5 – 2.3. 🔢
Answer: 3.2 - What’s 7.25 + 2.75? 🔢
Answer: 10 - Calculate 0.8 × 6. 🔢
Answer: 4.8 - What is 9.6 ÷ 3? 🔢
Answer: 3.2 - Find the result of 4.4 + 5.6. 🔢
Answer: 10 - What’s 6.7 – 2.2? 🔢
Answer: 4.5 - Calculate 2.5 × 4.4. 🔢
Answer: 11 - What’s 3.6 ÷ 0.6? 🔢
Answer: 6 - Find the result of 1.8 + 2.3. 🔢
Answer: 4.1 - What’s 8.4 – 1.4? 🔢
Answer: 7 - Calculate 3.3 × 2.2. 🔢
Answer: 7.26 - What’s 10.5 ÷ 2.5? 🔢
Answer: 4.2 - Find the result of 7.8 + 0.9. 🔢
Answer: 8.7 - What’s 5.6 – 3.1? 🔢
Answer: 2.5 - Calculate 4.2 × 3.3. 🔢
Answer: 13.86 - What is 9.9 ÷ 3.3? 🔢
Answer: 3 - Find the result of 2.2 + 6.8. 🔢
Answer: 9 - What’s 7.4 – 1.3? 🔢
Answer: 6.1 - Calculate 2.8 × 5.5. 🔢
Answer: 15.4 - What’s 6.6 ÷ 2.2? 🔢
Answer: 3 - Find the result of 1.9 + 4.7. 🔢
Answer: 6.6 - What’s 3.8 – 0.9? 🔢
Answer: 2.9 - Calculate 7.5 × 1.2. 🔢
Answer: 9 - What’s 4.8 ÷ 1.6? 🔢
Answer: 3 - Find the result of 8.1 + 2.4. 🔢
Answer: 10.5 - What’s 5.9 – 2.6? 🔢
Answer: 3.3 - Calculate 6.3 × 2.1. 🔢
Answer: 13.23
Geometry Calculations
- What’s the area of a square with side length 5? 🔢
Answer: 25 - Calculate the area of a circle with radius 3. 🔢
Answer: 28.27 - Find the perimeter of a rectangle with length 7 and width 4. 🔢
Answer: 22 - What is the area of a triangle with base 10 and height 5? 🔢
Answer: 25 - Calculate the volume of a cube with side length 4. 🔢
Answer: 64 - Find the circumference of a circle with diameter 8. 🔢
Answer: 25.13 - What is the area of a rectangle with length 8 and width 6? 🔢
Answer: 48 - Calculate the volume of a cylinder with radius 3 and height 5. 🔢
Answer: 141.37 - Find the perimeter of a square with side length 9. 🔢
Answer: 36 - What is the area of a triangle with sides 3, 4, and 5? 🔢
Answer: 6 - Calculate the volume of a rectangular prism with dimensions 3, 4, and 5. 🔢
Answer: 60 - Find the circumference of a circle with radius 7. 🔢
Answer: 43.98 - What is the area of a circle with diameter 10? 🔢
Answer: 78.54 - Calculate the perimeter of a rectangle with length 12 and width 9. 🔢
Answer: 42 - Find the volume of a sphere with radius 3. 🔢
Answer: 113.10 - What is the area of a trapezoid with bases 8 and 12, and height 5? 🔢
Answer: 100 - Calculate the circumference of a circle with radius 5. 🔢
Answer: 31.42 - Find the perimeter of a triangle with sides 6, 8, and 10. 🔢
Answer: 24 - What is the area of a parallelogram with base 7 and height 4? 🔢
Answer: 28 - Calculate the volume of a cone with radius 4 and height 9. 🔢
Answer: 150.80 - Find the circumference of a circle with diameter 14. 🔢
Answer: 43.98 - What is the area of a square with side length 12? 🔢
Answer: 144 - Calculate the volume of a rectangular prism with dimensions 2, 5, and 7. 🔢
Answer: 70 - Find the perimeter of a square with side length 15. 🔢
Answer: 60 - What is the area of a circle with radius 4? 🔢
Answer: 50.27 - Calculate the volume of a cube with side length 6. 🔢
Answer: 216 - Find the circumference of a circle with radius 6. 🔢
Answer: 37.70 - What is the area of a rectangle with length 15 and width 7? 🔢
Answer: 105 - Calculate the volume of a cylinder with radius 5 and height 10. 🔢
Answer: 785.40 - Find the perimeter of a triangle with sides 5, 12, and 13. 🔢
Answer: 30
Algebraic Problems
- Solve for x: 2x + 3 = 7. 🔢
Answer: x = 2 - What is the value of y if 3y – 5 = 16? 🔢
Answer: y = 7 - Solve for x: 4x – 2 = 14. 🔢
Answer: x = 4 - What is the value of z if 5z + 3 = 23? 🔢
Answer: z = 4 - Solve for x: x/3 = 5. 🔢
Answer: x = 15 - What is the value of y if 6y – 9 = 21? 🔢
Answer: y = 5 - Solve for x: 7x + 4 = 32. 🔢
Answer: x = 4 - What is the value of z if 8z – 6 = 30? 🔢
Answer: z = 4.5 - Solve for x: 9x – 5 = 22. 🔢
Answer: x = 3 - What is the value of y if 2y + 7 = 19? 🔢
Answer: y = 6 - Solve for x: 3x + 12 = 24. 🔢
Answer: x = 4 - What is the value of z if 4z – 8 = 12? 🔢
Answer: z = 5 - Solve for x: 5x – 7 = 18. 🔢
Answer: x = 5 - What is the value of y if 7y + 2 = 30? 🔢
Answer: y = 4 - Solve for x: 6x + 8 = 26. 🔢
Answer: x = 3 - What is the value of z if 10z – 15 = 45? 🔢
Answer: z = 6 - Solve for x: 8x – 4 = 28. 🔢
Answer: x = 4 - What is the value of y if 2y + 14 = 32? 🔢
Answer: y = 9 - Solve for x: 3x + 6 = 15. 🔢
Answer: x = 3 - What is the value of z if 6z – 4 = 26? 🔢
Answer: z = 5 - Solve for x: 4x – 3 = 13. 🔢
Answer: x = 4 - What is the value of y if 5y – 8 = 27? 🔢
Answer: y = 7 - Solve for x: 2x + 6 = 18. 🔢
Answer: x = 6 - What is the value of z if 9z + 4 = 31? 🔢
Answer: z = 3 - Solve for x: 7x – 3 = 25. 🔢
Answer: x = 4 - What is the value of y if 8y – 5 = 39? 🔢
Answer: y = 5.5 - Solve for x: 6x – 4 = 20. 🔢
Answer: x = 4 - What is the value of z if 5z + 2 = 22? 🔢
Answer: z = 4 - Solve for x: 9x – 7 = 20. 🔢
Answer: x = 3 - What is the value of y if 4y + 5 = 29? 🔢
Answer: y = 6
Dariel Campbell is the creative mind behind Puzzlerpedia, combining a love for puzzles with a talent for engaging writing. His innovative approach to puzzle creation and analysis has earned him a dedicated following. Dariel’s articles are not only informative but also inspire readers to see puzzles in a new and exciting light.
