Name
Chapter 20, Lesson 3
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Date
Hands On: Regroup in
Multiplication
CA Standards
NS 2.4, MR 2.1
Use base-ten blocks to find 2 × 27.
Step 1 Show 2 groups
of 27.
Step 2 Regroup the 14 Step 3 Think: In 2
ones as 1 ten and 4 ones. groups of 27, there are 5
tens and 4 ones.
27
× 2
_____
54
Solution: 2 × 27 = 54
Tens Ones
Tens Ones
Tell what multiplication sentence is shown by the blocks.
1.
2.
3.
4.
5.
6.
Writing Math How do you know when to regroup
when multiplying?
Reteach
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Use with text pages 434–435.