2-digit by 1-digit multiplication
Thirty problems past the times tables: a two-digit number times a one-digit one.
30 problems · answer key ·
Problems
Name: ________________ Time: ________
- 14 × 3 =
- 3 × 28 =
- 24 × 8 =
- 20 × 5 =
- 13 × 5 =
- 27 × 9 =
- 6 × 27 =
- 18 × 6 =
- 16 × 7 =
- 8 × 15 =
- 18 × 7 =
- 27 × 6 =
- 16 × 5 =
- 26 × 4 =
- 4 × 15 =
- 18 × 8 =
- 7 × 17 =
- 19 × 7 =
- 5 × 26 =
- 18 × 3 =
- 15 × 5 =
- 22 × 6 =
- 6 × 13 =
- 3 × 25 =
- 17 × 8 =
- 6 × 19 =
- 9 × 16 =
- 29 × 6 =
- 7 × 18 =
- 3 × 14 =
How to do them fast
Split the two-digit number into tens and ones, multiply each, and add.
17 × 6 = 102
10 × 6 = 60 → 7 × 6 = 42 → 60 + 42 = 102
Just under a ten? Multiply the ten and take a little off.
28 × 7 = 196
30 × 7 = 210 → 2 × 7 = 14 → 210 − 14 = 196
Around 4 seconds each is good; under 3 is fast. More methods are in the mental math tricks.
Answer key
- 14 × 3 = 42
- 3 × 28 = 84
- 24 × 8 = 192
- 20 × 5 = 100
- 13 × 5 = 65
- 27 × 9 = 243
- 6 × 27 = 162
- 18 × 6 = 108
- 16 × 7 = 112
- 8 × 15 = 120
- 18 × 7 = 126
- 27 × 6 = 162
- 16 × 5 = 80
- 26 × 4 = 104
- 4 × 15 = 60
- 18 × 8 = 144
- 7 × 17 = 119
- 19 × 7 = 133
- 5 × 26 = 130
- 18 × 3 = 54
- 15 × 5 = 75
- 22 × 6 = 132
- 6 × 13 = 78
- 3 × 25 = 75
- 17 × 8 = 136
- 6 × 19 = 114
- 9 × 16 = 144
- 29 × 6 = 174
- 7 × 18 = 126
- 3 × 14 = 42