Subtracting Within 100 Without Regrouping: Worksheet 1
Forty column problems where the ones are always enough: subtracting within 100 without regrouping, the first step into written subtraction for children aged 7-8.
2 A4 pages · for home and classroom use
Labugen
Subtraction up to 100 without regrouping
set no. 7304
- 77-62
- 48-45
- 62-51
- 97-50
- 36-21
- 42-2
- 49-13
- 69-13
- 93-13
- 19-6
- 84-31
- 2-1
- 29-5
- 36-2
- 59-16
- 89-12
- 47-10
- 57-35
- 26-6
- 79-22
- 99-58
- 35-25
- 25-3
- 19-5
- 26-4
- 74-51
- 9-3
- 47-1
- 89-86
- 65-14
- 37-22
- 17-7
- 15-5
- 78-7
- 77-32
- 5-1
- 59-11
- 37-17
- 17-16
- 36-15
How to use this worksheet
- Solve problem 1 together: 77 − 62. Ones, 7 − 2 = 5; tens, 7 − 6 = 1; answer 15.
- Keep the ones-then-tens order in every problem, even though left to right would work here too.
- Look for the problems where a ten takes away a ten exactly, such as 93 − 13 = 80 and 26 − 6 = 20.
- Check with the answer key, counting across the unnumbered rows of five.
What this worksheet teaches
Twenty-five problems subtract a two-digit number from a two-digit number (84 − 31, 99 − 58, 65 − 14), and fifteen involve a one-digit number (42 − 2, 29 − 5, 9 − 3). In every problem the top ones digit is at least as large as the bottom one, so nothing has to be borrowed. Answers range from 1 to 80.
Subtract ones, then tens
Written subtraction always starts in the ones column. Here the order never changes the answer, but it will be needed as soon as borrowing appears. Zeros deserve a second look: in 97 − 50 the ones give 7 − 0 = 7, and in 35 − 25 they give 0, so the answer is 10. Checking by addition is quick: 15 + 62 = 77.