Multiplying Decimal Numbers by a Whole Number

1.

Multiple Choice

30 sec

1 pt

Multiply

4 x 3.7

14.0

148

14.8

2.

Multiple Choice

30 sec

1 pt

Multiply

6 x 4.2

252

25.2

2.52

3.

Multiple Choice

30 sec

1 pt

Shannon bought 4 metal rods that are each 3.2 cm long. If she lines them up, how long will the line be?

128 cm

1,280 cm

12.9 cm

12.8 cm

4.

Multiple Choice

30 sec

1 pt

A class puts 4 weights on a scale. Each weight is 3.4 kg. How much weight is on the scale?

13.6

136

1.36

13.8

5.

Multiple Choice

30 sec

1 pt

A race car driver can drive one lap in 3.1 minutes. How long will it take the car to go 3 laps?

9.3 minutes

93 minutes

930 minutes

9.2 minutes

6.

Multiple Choice

30 sec

5 pts

7 x 0.9=

63

6.3

0.63

0.063

7.

Multiple Choice

30 sec

5 pts

Which shows the correct decimal placement for 7 x 12.1?

847

84.7

8.47

0.847

8.

Match

1 min

1 pt

Match where the 5 is in each number with the place value word.

tenths

2.146 58

ten thousandths

7.862 435

millionths

1.054 987

hundredths

6.095 6

thousandths

4.567

9.

Drag and Drop

1 min

1 pt

Rounding 5.678 to 5 would be using (a) and would give an (b) .

front end estimation

underestimate

overestimate

benchmark estimation

10.

Draw

3 mins

1 pt

Write the number zero and two hundred three thousandths

11.

Drag and Drop

1 min

1 pt

Rounding 6.532 to 7 is using (a) and is an (b) .

benchmark rounding

overestimate

underestimate

front-end estimation

12.

Multiple Choice

30 sec

1 pt

0.006 x 3=

0.000 18

0.001 8

0.018

0.180

13.

Multiple Choice

30 sec

1 pt

0.08 x 4=

0.032

0.32

3.2

0.003 2

14.

Dropdown

1 min

1 pt

Using the nearest benchmark, 5.399 would round to (a) and if we multiplied that by 5, we would get (b) . This would be an (c) .

5

25

underestimate

6

30

overestimate

15.

Reorder

1 min

1 pt

Create the number six and eight hundred seventy nine ten thousandths.

6.

0

8

7

9

16.

Multiple Choice

30 sec

1 pt

0.4 x 7=

2.8

0.28

0.028

2.4

17.

Match

1 min

1 pt

Match the following

three thousandths

0.003

forty-five hundredths

0.045

three hundredths

0.03

forty-five thousandths

0.45

three tenths

0.3

18.

Multiple Choice

30 sec

1 pt

Which shows the correct decimal placement for 25.46 x 5?

1.273

1273.0

12.73

127.30

19.

Multiple Choice

30 sec

Ungraded

Is 5.8967 x 9 going to be closer to 54 or 45?

54

45

Answer explanation

5.8967 is closer to 6, so it will round up. 6 x 9 is 54, so the product will be closer to 54!

20.

Multiple Choice

30 sec

1 pt

5.32 x 4=

21.28

21.38

21.82

22.28

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