Tens and ones
Every two-digit number is built from tens and ones: 47 is 4 tens and 7 ones, or 40 + 7. Here second graders learn to split numbers up to 100 into tens and ones and put them back together, online or on a printable worksheet.
How to solve this
- Every two-digit number is made of tens and ones: in 47, the 4 stands for 4 tens (40) and the 7 for 7 ones.
- Identify the tens digit first, multiply it by 10, then add the ones digit to get the full value.
- Check by reading aloud: "four tens and seven ones" — does the written number match?
Examples
47 = ?
4 tens + 7 ones
6 tens + 3 ones = ?
63
80 + 5 = ?
85
Practice problems with answers
Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.
- 52 = ___ tens + ___ ones
- 85 = ___ tens + ___ ones
- 1 ten + 4 ones = ___
- 6 tens + 3 ones = ___
- 62 = ___ tens + ___ ones
- 43 = ___ tens + ___ ones
- 79 = ___ tens + ___ ones
- 81 = ___ tens + ___ ones
Show answers
- 5 tens + 2 ones
- 8 tens + 5 ones
- 14
- 63
- 6 tens + 2 ones
- 4 tens + 3 ones
- 7 tens + 9 ones
- 8 tens + 1 one