Addition Within 100 Without Regrouping: Worksheet #1
Forty column problems of addition within 100 without regrouping, for ages 7-8: the ones never pass 9, so every problem is solved in two clean steps.
2 A4 pages · for home and classroom use
Labugen
Addition up to 100 without regrouping
set no. 201
- 35+12
- 33+16
- 91+8
- 96+3
- 61+22
- 61+7
- 96+1
- 24+45
- 22+37
- 47+12
- 35+34
- 60+5
- 75+14
- 22+41
- 90+5
- 50+21
- 92+1
- 4+30
- 17+61
- 22+62
- 92+5
- 75+12
- 75+13
- 83+10
- 11+4
- 41+6
- 10+28
- 85+14
- 63+36
- 51+31
- 43+46
- 10+60
- 43+56
- 31+3
- 60+37
- 3+65
- 97+2
- 85+2
- 70+29
- 92+7
How to use this worksheet
- Solve the first problem together: 35 + 12. Ones first, 5 + 2 = 7; then tens, 3 + 1 = 4; answer 47.
- Keep that order, ones before tens, in every problem, even though nothing is carried here.
- Work across the eight rows of five, with a short break after every two rows.
- The practice problems carry no numbers, so match them to the key by counting across the rows.
What this worksheet teaches
Twenty-four problems add two two-digit numbers (61 + 22, 24 + 45, 10 + 60), and sixteen add a one-digit number (91 + 8, 4 + 30, 60 + 5). All sums fall between 15 and 99. Children learn to treat a two-digit number as tens and ones and to add each place separately, which is the core of column addition. Because no ten is carried, attention stays on correct alignment and place value.
Ones first, then tens
Starting on the right seems unnecessary here, but it is the order that works every time once regrouping appears. A quick estimate helps too: 61 + 22 is about 60 + 20, so 83 makes sense. Eight problems on this page make exactly 99, such as 43 + 56 and 70 + 29, a nice check that each place has reached 9 but not more.