Grade 2, Operations
Add 2-digit numbers
Add 2-digit numbers to 100 with any strategy, with and without bridging a ten.
Three levels
One skill, rising difficulty
Each sheet carries one level. The three are the same skill at rising difficulty, each named for what it practises.
- Level 1: Without bridging a ten
- Add. Use any strategy that works for you.
- Level 2: Bridging a ten
- Add. Use any strategy that works for you.
- Level 3: Mixed
- Add. Use any strategy that works for you.
Worked example
How the sheet explains it
The helper printed at the top of each sheet: one solved example and the steps a student follows, before the first question. Every number sentence in it is proven by the same checker as the answer key.
Level 1: Without bridging a ten
42 + 35 = 77
- Break apart: 42 = 40 + 2 and 35 = 30 + 5.
- Add the tens: 40 + 30 = 70. Add the ones: 2 + 5 = 7.
- Put them together: 70 + 7 = 77.
Level 2: Bridging a ten
48 + 37 = 85
- 48 needs 2 more to make 50. Move 2 from 37: 48 + 2 = 50 and 37 − 2 = 35.
- 50 is a friendly number: 50 + 35 = 85.
- So 48 + 37 = 85.
Level 3: Mixed
56 + 29 = 85
- 29 is close to 30, so add 30 instead: 56 + 30 = 86.
- You added 1 too many, so take it away: 86 − 1 = 85.
- So 56 + 29 = 85.
Goes with
Reference sheets
One-page helpers a student keeps beside this sheet:
- Addition and subtraction strategies
Every reference, facts and support sheet is listed in the worksheet catalogue.
In the BC curriculum
Content standards
The British Columbia content standard this skill is written for, by the codes used across this site:
- bc.math.2.c.4
The wording of each standard is on the Province's mathematics curriculum page.
Print it free
Print the sheet and its answer key
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