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English 26 Public

Lesson 7

Study Slideshow

find 40 x 100

4,000

find 30 x 3,000

90,000

find 100 x 400

40,000

70 x 600

42,000

2000 x 500

1,000,000

40 x 500

200,000

What multiplication does this array show?

4 x 4

What multiplication does this array show?

3 x 4 or 4 x 3

What multiplication does this array show?

4 x 4

Is this an array?

Does this use rounding or compatible numbers?

Rounding

Does this use rounding or compatible numbers?

Compatible numbers

Using rounding to the nearest ten, how would you change these numbers?

200 x 40

Using rounding to the nearest ten, how would you change these numbers?

180 x 10

Using compatible numbers, what is one way you could estimate these numbers?

15 x 30 15 x 25

Using compatible numbers, what is one way you could estimate these numbers?

25 x 40 20 x 40 25 x 35