Worked example
Which number is 4 tens and 2 ones?
Answer & why
Answer: 42
4 tens are 40; add 2 ones to make 42.
Grade 1 · Math
Build tens and ones
Compose a two-digit number from tens and ones.
8 generated examples + worked example
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8 reproducible examples from this math generator. Choose New examples for another set.
Question 1
Which number is 1 tens and 4 ones?
- 41
- 18
- 5
- 14
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 14
1 × 10 + 4 = 14.
Question 2
Which number is 8 tens and 1 ones?
- 83
- 81
- 79
- 84
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 81
8 × 10 + 1 = 81.
Question 3
Which number is 4 tens and 3 ones?
- 43
- 34
- 41
- 7
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 43
4 × 10 + 3 = 43.
Question 4
Which number is 1 tens and 3 ones?
- 31
- 17
- 11
- 13
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 13
1 × 10 + 3 = 13.
Question 5
Which number is 9 tens and 6 ones?
- 96
- 94
- 95
- 98
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 96
9 × 10 + 6 = 96.
Question 6
Which number is 1 tens and 8 ones?
- 81
- 19
- 21
- 18
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 18
1 × 10 + 8 = 18.
Question 7
Which number is 4 tens and 7 ones?
- 49
- 51
- 47
- 50
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 47
4 × 10 + 7 = 47.
Question 8
Which number is 3 tens and 3 ones?
- 34
- 33
- 35
- 32
A hint
Multiply the number of groups by the size of each group, then add the ones.
Answer & why
Answer: 33
3 × 10 + 3 = 33.