Grade 2, Number sense
Tens and ones
Break two-digit numbers into tens and ones.
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: Count the blocks
- Count the tens and ones. Write the number.
- Level 2: How many tens and ones
- Write how many tens and ones.
- Level 3: Write it as a sum
- Write the missing number.
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: Count the blocks
- Count the long rods. Each rod is one ten: 3 tens.
- Count the small cubes. Each cube is one: 4 ones.
- 3 tens and 4 ones: 30 + 4 = 34.
Level 2: How many tens and ones
47 = 4 tens 7 ones
- The first digit shows the tens: 4 tens is 40.
- The second digit shows the ones: 7 ones.
- Check: 40 + 7 = 47.
Level 3: Write it as a sum
47 = 40 + 7
- 47 has 4 tens and 7 ones. 4 tens is 40.
- Take away the part you know: 47 − 40 = 7.
Goes with
Reference sheets
One-page helpers a student keeps beside this sheet:
- Place value
- Number words
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.1
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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Back to all worksheets by grade, or read the Grade 2 guide to what this grade learns in British Columbia.