Test Your Intelligence with This Math Quiz 🧮 50 Mental Calculations

Added: 2026-05-21

[00:00:00]Get ready >> [music] >> because today we are going to test your mental speed with an intense series of math challenges.

[00:00:07]Please take 2 [music] seconds to click that subscribe button and turn on the notification bell to join our community of math geniuses.

[00:00:15]Question one. [music] How much is 8 + 9?

[00:00:22]Answer, >> [music] >> the sum of 8 + 9 is exactly 17.

[00:00:28]>> [music] >> Question two. What is 15 - 7?

[00:00:35]>> [music] >> Answer, if you take 7 away from 15, you are left with 8.

[00:00:43]>> [music] >> Question three. How much is 6 * 7?

[00:00:47]>> [music] >> Answer, the product of 6 multiplied by 7 is 42. [music] Question four. [music] Divide 24 by 3.

[00:01:03]>> [music] >> Dividing 24 by 3 gives you a result of 8.

[00:01:11]>> [music] >> Question five. What is 45 + 15?

[00:01:17]Adding 45 and 15 results in a total of 60.

[00:01:22]>> [music] >> Question six. How much is 11 * 4?

[00:01:29]>> [music] >> 11 multiplied by 4 = 44.

[00:01:39]Question seven. [music] Subtract 25 from 80.

[00:01:44]>> [music] >> If you subtract 25 from 80, the remainder is 55.

[00:01:50]>> [music] >> Question eight. What is 21 / 3?

[00:02:00]21 / 3 is equal [music] to 7.

[00:02:06]Question nine. How much is 9 * 6?

[00:02:14]The result of 9 * 6 [music] is 54.

[00:02:21]Question [music] 10. Add 24 and 37.

[00:02:26]>> [music] >> Adding 24 and 37 gives you a total of 61.

[00:02:35]Question 11. What is 12 [music] * 5?

[00:02:41]Answer, >> [music] >> 12 multiplied by 5 is exactly 60.

[00:02:50]Question 12. [music] How much is 125 / 5?

[00:02:55]Answer, [music] 125 / 5 results in 25.

[00:03:03]Question 13. What is 40 multiplied by 3?

[00:03:09]Answer, >> [music] >> the product of 40 and 3 is 120.

[00:03:18]Question [music] 14. Take 19 away from 100.

[00:03:23]>> [music] >> Answer, taking 19 away from 100 leaves you with 81.

[00:03:28]>> [music] >> Question 15. How much is 3 * 3 * 3?

[00:03:37]Answer, >> [music] >> 3 multiplied by itself three times is 27.

[00:03:44]>> [music] >> Question 16. What is 25% of 400?

[00:03:51]Answer, [music] 25% of 400 is equal to 100.

[00:03:58]>> [music] >> Question 17. What is 0.2 * 50?

[00:04:05]Answer, >> [music] >> 0.2 * 50 results in a value of 10.

[00:04:11]>> [music] >> Question 18. Add 0.25 and 0.25.

[00:04:19]Answer, >> [music] >> adding 0.25 and 0.25 gives you 0.5.

[00:04:27]Question 19. [music] How much is 56 / 7?

[00:04:33]Answer, [music] 56 / 7 = 8.

[00:04:40]>> [music] >> Question 20. What is 20 + 5 * 4?

[00:04:46]>> [music] >> Answer, following the order of operations, the answer is 40.

[00:04:50]>> [music] >> Question 21. How much is 13 [music] * 3?

[00:05:01]Answer, 13 multiplied by 3 is 39.

[00:05:07]>> [music] >> Question 22. What is 360 / 6?

[00:05:15]>> [music] >> Answer, 360 / 6 is exactly 60.

[00:05:24]Question 23. Subtract 16 [music] from 36.

[00:05:28]Answer, subtracting 16 from 36 leaves you with 20.

[00:05:38]Question [music] 24. What is 30% of 200?

[00:05:43]Answer, >> [music] >> 30% of 200 is equal to 60.

[00:05:51]Question 25. [music] How much is 5.5 + 4.25?

[00:05:57]Answer, >> [music] >> the sum of 5.5 and 4.25 is 9.75.

[00:06:05]Question [music] 26. Solve for x, 2x + 4 = 14.

[00:06:11]Answer, [music] in this equation, the value of x is 5.

[00:06:20]Question 27.

[00:06:21]>> [music] >> What is 2 * 2 * 2 * 2?

[00:06:25]Answer, [music] 2 multiplied by itself four times is 16.

[00:06:33]>> [music] >> Question 28. How much is 10 - 3?

[00:06:39]Answer, [music] 10 - 3 is equal to 7.

[00:06:47]Question 29. [music] What is 100 / 5?

[00:06:52]Answer, [music] 100 / 5 is exactly 20.

[00:06:59]>> [music] >> Question 30. Subtract 155 from 500.

[00:07:04][music] Answer, subtracting 155 from 500 leaves you with [music] 345.

[00:07:16]>> [music] >> Question 31. If x / 3 is 12, what is x?

[00:07:22]Answer, [music] if you solve for x, the answer is 36.

[00:07:29]>> [music] >> Question 32. How much is 12 * 12?

[00:07:35]>> [music] >> Answer, 12 * 12 is equal to 144.

[00:07:42]>> [music] >> Question 33. Calculate 4 * 15 / 2.

[00:07:50]Answer, [music] the result of this calculation is 30.

[00:07:55]>> [music] >> Question 34. What is 10 [music] * 10 * 10?

[00:08:03]10 multiplied by itself three [music] times is 1,000.

[00:08:09]>> [music] >> Question 35. How much is 3 * 40 + 80?

[00:08:19]>> [music] >> The final result of this operation is 200.

[00:08:26]Question 36. [music] What is 4 * 3?

[00:08:32]4 multiplied [music] by 3 is 12.

[00:08:39]Question 37. [music] What is 1/4 as a percentage?

[00:08:46]The [music] fraction 1/4 is 25%.

[00:08:53]Question 38. If 10x [music] = 150, what is x?

[00:08:59]Dividing 150 by 10 shows that x is 15.

[00:09:07]Question 39. What is -3 * -8? [music] -3 * -8 is a positive [music] 24.

[00:09:21]Question 40.

[00:09:22]>> [music] >> How much is 5 * 2 * 2?

[00:09:28]Multiplying these three numbers gives you 20.

[00:09:34]>> [music] >> Question 41. What is 11 [music] * 11?

[00:09:41]Answer, 11 * 11 is equal to 121. [music] Question [music] 42. Solve for x, 4x - 2 = 18.

[00:09:58]>> [music] >> 5 >> [music] >> Question 43. What is 1/3 multiplied by [music] 1/3?

[00:10:10]1/3 * 1/3 = 1/9.

[00:10:17]>> [music] >> Question 44. How much is 15 * 15?

[00:10:24]15 multiplied by 15 is 225. [music] >> [music] [music] >> Question 46. What is 5% of 60?

[00:11:00]Question 47. [music] Divide 1,000 by 40.

[00:11:07]1,000 / 40 [music] is 25.

[00:11:13]>> [music] >> Question 48. Calculate 5 + 5 * 20 - 15.

[00:11:19][music] The final answer for this calculation is 50.

[00:11:27]>> [music] >> Question 49. If x + 20 = 31, what is x?

[00:11:34]The [music] value of x in this case is 11.

[00:11:41]Question 50. What is [music] 250 multiplied by 4?

[00:11:48]250 [music] * 4 is exactly 1,000.