Show:
Straight Multiplication
Using a Model
Multiplying by 10's
What is Equal
Random
100

23.7 x 67

1,587.9

100

Multiply .60 x  .40 using a model

.24

100

567 times 100

56,700

100

0.46 


46 x 1/100

100
True or False ?


Since 5x124=620 then 0.5 x 12.4 = 6.2 

TRUE!

200

124.23 x .67

83.2341

200

multiply 0.4 x 0.8 using a model

0.32

200

4.2 x 10^1

42

200

.5

5 x 1/10 

200

True or False

If 17 x 17 = 289, then 0.17 times 1.7= 0.289

TRUE!

300

22.50 x 4.5 = n

n= 101.25

300

multiply 0.30 x 0.7

.21

300

54.25 x 10^3

54,250

300

.765

765 x 1/1000

300

You get 300 free points - so a total of 600!

YAY!

400

8.06 x 2 = x

x= 16.12

400

multiply 0.25 x 3

0.75

400

1,567 x 10^2

156,700

400
0.1

1 x 1/10

400

What are the 2 partial products of 56 x 189

1,134 and 9,450

500

the product of 345 and 23

7,935

500

multiply 0.5 times 4

2

500

1.567 x 10^2

156.7

500

4 x 1/10

.4

500

0.05 x 10^2

5