Multiply two-digit multiples of 10 by two-digit multiples of 10. Estimate multi-digit products by rounding numbers to their largest place value.
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If you need to adapt or shorten this lesson for remote learning, we suggest prioritizing Anchor Task 1 and Anchor Task 3 (benefit from worked examples). Find more guidance on adapting our math curriculum for remote learning here.
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1. Solve.
a. 6 x 3
b. 60 x 3
c. 60 x 30
2. What do you notice about #1? What do you wonder?
Estimate the following products.
a. 64 x 32
b. 57 x 45
c. 24 x 77
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Find the following products.
a. 20 x 40 |
b. 60 x 70 |
c. 20 x 50 |
Estimate the following products.
a. 32 x 81 |
b. 48 x 59 |
c. 25 x 73 |
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