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Steps
Find the Mistake
Powers of Ten
100

4.1 x 0.5 = 

2.05

100

What is Step 1 to multiplying decimals?

Line up the numbers

100

2.21 x 3 = 6.61

6.63

100

4 x 10 x 10 x 10 x 10 

4 x 104 = 40,000

200

1.1 x 2.2 =

2.42

200

What is Step 2 to multiplying decimals?

Multiply like normal

200

4.32 x 3 = 10.96

12.96

200

11.6 x 102=

1,160

300

82.1 x 0.3 =

24.63

300

What is Step 3 to multiplying decimals?

Count your decimals are behind the numbers

300

5.64 x 4 = 22.46

22.56

300

6 x 105

600,000

400

92.1 x 0.2

18.42

400

What is the last step to multiplying decimals?

Put your decimal point back in the answer 

400

6.75 x 5 = 30.75

33.75

400

2 x 0.3=

2 x 3 x 0.1

500

27.23 x 0.55 =

14.9765

500

List all the steps to multiplying decimals. (Hint: there are 4 steps)

Step 1: Line up numbers

Step 2: Multiply like normal

Step 3: Count your decimal point (hop hop)

Step 4: Put your decimal point back in

500

8.76 x 8 = 70.08

There is no error!

500

0.5 × 101 = ■ 

0.5 × 102 = ■ 

0.5 × 103 = ■

5; 50; 500