Regrouping into Blocks of 10 Worksheets for 1st Grade
Regroup a pile of 10-29 loose ones cubes into tens and leftover ones. 15 free printable worksheets, each with an answer key.
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Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
Worksheet #1
Worksheet #2
Worksheet #3
Worksheet #4
Worksheet #5
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Worksheet #9
Worksheet #10
Worksheet #11
Worksheet #12
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Worksheet #14
Worksheet #15
Regrouping into Blocks of 10: what children learn
Regrouping is the idea that any 10 ones cubes can be swapped for 1 tens rod — this is the exact same trade that happens during carrying in addition, just shown with physical blocks first.
Regrouping into Blocks of 10: worked example
These blocks show 14 ones. Regroup them into tens and ones. 1 ten, 4 ones
10 of the 14 ones cubes trade for 1 tens rod, leaving 4 ones cubes over — so 14 regroups into 1 ten and 4 ones.
Regrouping into Blocks of 10: a common mistake to watch for
Kids sometimes forget that exactly 10 ones make a ten — trading only some of them (like 8) and miscounting the leftover — counting out loud to 10 while setting the group aside helps.
Regrouping into Blocks of 10: how to help at home or in class
Give your child a heap of unit cubes, bottle caps or beads and ask how many tens can be made from them. Each time ten are counted out, snap or bundle them with a rubber band and set the bundle apart. The leftovers are the ones. Let your child make the trade out loud, saying ten ones for one ten. When trading feels automatic and your child can predict how many bundles a pile will make, try decomposing numbers.
What is on these Regrouping into Blocks of 10 worksheets
This set has 15 different worksheets for 1st grade, with 8 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Regroup the blocks into tens and ones.”
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers