Renaming Numbers: Trading Tens and Ones
A free printable worksheet on renaming numbers: 52 is 5 tens 2 ones, but also 4 tens 12 ones. Twelve problems with 2- and 3-digit numbers that build the idea behind regrouping in subtraction. Answer key included.
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- Size
- US Letter (8.5 × 11 in), fits A4
- 2 pages: the worksheet and its answer key
- Level
- Grade 2
- License
- Free for personal & classroom use
About this worksheet
A free printable worksheet on renaming numbers: 52 is 5 tens 2 ones, but also 4 tens 12 ones. Twelve problems with 2- and 3-digit numbers that build the idea behind regrouping in subtraction. Answer key included. Second graders usually finish it in 10 to 15 minutes. Count rods by tens first, then add the ones.
Answer key at a glance
1) 7 hundreds 19 tens 8 ones = 898; 2) 722 = 6 hundreds 12 tens 2 ones; 3) 42 = 3 tens 12 ones; 4) 1 ten 15 ones = 25; 5) 722 = 72 tens 2 ones; 6) 50 = 4 tens 10 ones; 7) 87 = 7 tens 17 ones; 8) 483 = 3 hundreds 18 tens 3 ones. The key has 12 answers in all.
Tips for using it
- Say the number in tens and ones: 47 is 4 tens and 7 ones.
- A zero holds a place: 207 has 0 tens, but the zero still needs to be written.
Printing tips
Download the PDF and print at 100% (or “fit to page” on A4). Page 1 is the worksheet and page 2 is the answer key with the answers in red; print just page 1 if you want to keep the answers for checking. Free for personal, family and classroom use.
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