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055_G3U11_G4U18_˙—» ¿º 2011.3.22 9:1 PM ˘ ` 102 PDF_In 2540DPI 150LPI T
Activity 1 Multiplication with Regrouping Twice
1 . Use models to find the product.
Multiply the ones. 1 34 Multiply the ones.
3 ^ 4 ones 12 ones 3 Multiply the tens.
3 ^ 4 ones 1 ten 2 ones 34 Add the products.
^3 12
Multiply the tens. 90
3 ^ 3 tens 9 tens 2 102
Add all the tens. 1
9 tens 1 ten 10 tens
9 tens 1 ten 1 hundred 34
^3
102
a. b. 4 7
15 ^2
^6
c. d.
39 26
^3 ^4
102
Activity 1 Multiplication with Regrouping Twice
1 . Use models to find the product.
Multiply the ones. 1 34 Multiply the ones.
3 ^ 4 ones 12 ones 3 Multiply the tens.
3 ^ 4 ones 1 ten 2 ones 34 Add the products.
^3 12
Multiply the tens. 90
3 ^ 3 tens 9 tens 2 102
Add all the tens. 1
9 tens 1 ten 10 tens
9 tens 1 ten 1 hundred 34
^3
102
a. b. 4 7
15 ^2
^6
c. d.
39 26
^3 ^4
102
