Multiplication by 10s and 100s
Division by 10s and 100s
Area Model for Multiplication
Area of a Rectangle
Division
100

3 x 10 =

30

100

70 ÷ 10 =

7

100

21 x 5 =

105

100

A rectangle has side lengths of 4in. and 6in. What is the area?

24 square inches

100

33 ÷ 3 =

11

200

5 x 100 = 

500

200

300 ÷ 100 = 

3

200

55 x 4 =

220

200

A rectangle has side lengths of 10in. and 3in. What is the area?

30 square inches

200

70 ÷ 2 =

35

300

25 x 10 =

250

300

2,000 ÷ 10 =

200

300

32 x 6 =

192

300

A rectangle has side lengths of 4 in and in.The area is 20 square inches. What is the value of n?

5 inches

300

100 ÷ 4 =

25

400

6 x 100 =

600

400

3,400 ÷ 100 =

34

400

22 x 35 =

770

400

A rectangle has side lengths of 7 in and r in.The area is 28 square inches. What is the value of r?

4 inches

400

What is the "left over part" called when we divide?

The remainder

500

31 x 100 =

3,100

500

51,000 ÷ 100 =

510

500

47 x 63 =

2,961

500

What is the formula for area?

A = l x w

500

What is the answer called when we divide?

The quotient

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