Find the Product
Steps
Find the Mistake
Multiply by decimal
Multiply by a whole number
100

4.1 x 0.5 = 

2.05

100

What is Step 1 to multiplying decimals?

Count how many digits are after the decimal in both numbers

100

2.21 x 3 = 6.61

6.63

100

7.52 x 3

22.56

100

9.2 x 39 =

358.8

200

1.1 x 2.2 =

2.42

200

What is Step 2 to multiplying decimals?

Multiply and ignore the decimals

200

4.32 x 3 = 10.96

12.96

200

11.6 x 2.1

24.36
200

3.05 x 26 =

79.3

300

82.1 x 0.3 =

24.63

300

What is Step 3 to multiplying decimals?

Place the decimal. Starting from the right count the total number of places found in step 1 

300

5.64 x 4 = 22.46

22.56

300

8.76 x 6.4

56.064

300

8.39 x 62 =

520.18

400

92.1 x 0.2

18.42

400

What is the x or the 0 called in the second row 

Place holder

400

6.75 x 5 = 30.75

33.75

400

99 x 4.3

425.7

400

5.05 x 19 =

95.95

500

27.23 x 0.55 =

14.9765

500

Do you have to line up the decimals when multiplying? 

NOOOOOOOOOOOOO

500

8.76 x 8 = 70.08

There is no error!

500

25.4 x 9.8

248.92

500

14.5 x 89 =

1290.5

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