Mixed mental math questions
Thirty questions, mixing all four operations in the same ranges as the daily sprint, from easy to hard.
30 problems · answer key ·
Problems
Name: ________________ Time: ________
- 33 + 47 =
- 93 − 13 =
- 8 × 7 =
- 12 ÷ 4 =
- 43 + 42 =
- 36 − 14 =
- 9 × 4 =
- 15 ÷ 5 =
- 34 + 44 =
- 45 − 18 =
- 6 × 6 =
- 50 ÷ 5 =
- 27 + 80 =
- 103 − 29 =
- 7 × 9 =
- 90 ÷ 10 =
- 25 + 27 =
- 71 − 21 =
- 6 × 8 =
- 70 ÷ 7 =
- 236 + 54 =
- 243 − 78 =
- 25 × 6 =
- 72 ÷ 24 =
- 283 + 57 =
- 458 − 83 =
- 9 × 26 =
- 252 ÷ 28 =
- 225 + 35 =
- 238 − 99 =
How to do them fast
Switching between operations is its own skill: the sprint asks for it every day. Don't slow down at each switch; pick your method for the operation and go. The mental math tricks page has one method for each.
Two minutes for the sheet is good; under a minute and a half is fast. More methods are in the guide to getting faster.
Answer key
- 33 + 47 = 80
- 93 − 13 = 80
- 8 × 7 = 56
- 12 ÷ 4 = 3
- 43 + 42 = 85
- 36 − 14 = 22
- 9 × 4 = 36
- 15 ÷ 5 = 3
- 34 + 44 = 78
- 45 − 18 = 27
- 6 × 6 = 36
- 50 ÷ 5 = 10
- 27 + 80 = 107
- 103 − 29 = 74
- 7 × 9 = 63
- 90 ÷ 10 = 9
- 25 + 27 = 52
- 71 − 21 = 50
- 6 × 8 = 48
- 70 ÷ 7 = 10
- 236 + 54 = 290
- 243 − 78 = 165
- 25 × 6 = 150
- 72 ÷ 24 = 3
- 283 + 57 = 340
- 458 − 83 = 375
- 9 × 26 = 234
- 252 ÷ 28 = 9
- 225 + 35 = 260
- 238 − 99 = 139