Adding, Subtracting, and Multiplying Decimals

Adding

100

3.5+7.9

11.4

200

27.5+48.302

75.802

300

6²+12.34

23.66

400

11.34+2.2+23.304

36.844

500

23.546+12.987

36.533

Subtracting

100

8.9-4.5

4.4

200

15.2-9.3

5.9

300

5²-23.599

1.401

400

85-27.682

57.318

500

580.76-54.68

526.08

Multiplying

100

2.1 x 3.4

7.14

200

5.6(4.5)

25.2

300

7.89 x 3.2

25.248

400

5³(4.5)

562.5

500

2(3.56 x 12.5) + 2(20 x 12.5) +2(20 x 3.56)

686.9

Place Value

100

In the number 542.95, what place value is the 2 in?

Ones

200

Which expression have the same product as 0.567 x 0.64?

A) 5.67x6.4

B) 567x64/100,000

C) 567x72x1/100x1/100

D) 567 thousandths x 64 thousandths

B and D

300

In the number 4532.007, what number is in the hundreds place?

5

400

In the number 456.987, what place value is the hundredths in?

8

500

In the number 7825.324, what number is in the thousandths place?

4

Word Problem

100

Charlie's house is 1.5 km from the store. The store is 0.562 km from school. Charlie walks from her house to the store and then from the store to school. What is the total distance Charlie walked?

2.062 km

200

Each day, Jessie walks 3.35 miles in the morning and walks 2.58 miles in the evening. If Jessie does this 7 days a week, how many miles is she walking in total.

41.51 miles

300

On Saturday mornings, Emily and Daniella sell pumpkins at City Place. They sell each pumpkin for $2.35 per pound. Emily weighs a pumpkin on a scale. The scale shows that the pumpkin weighs 16.32 pounds. How much does that pumpkin cost? Round to the nearest hundredth.

$32.35

400

What is the value of the expression 3a+ab-c when a=5.3, b=1.25, and c=2.4?

20.125

500

Izzy and Krissy play video games together online. They finish level one in 54.683 seconds. They finish level two 5.632 seconds faster than they finished level one. How many seconds does it take for them to finish level one and level two?

103.734