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Place Value
Rounding
Adding Decimals
Subtracting Decimals
Multiplying Decimals
100

What place value is the one in?

18,909

ten thousands

100

Round to the nearest hundreds.

678

700

100

5.5 + 3.9=

9.4

100

18.3 - 5.2=

13.1

100

5 X 1.1=

5.5

200

What place value is the 6 in?

77.6

tenths

200

Round to the nearest ten thousands.

573,222

570,000

200

16.2 + 8.7=

24.9

200

621.5 - 21.50


600

200

12 X 6.13=

73.56

300

What place value is the 9 in?

12,129,010.18

thousands

300

Round to the nearest tenths.

15.15

15.2

300

131.2 + 12.12=

143.32

300

83 - 2.1=

80.9

300

18.89 X .09=

1.7001

400
What is the value of the 5?

13,317,161,514

500

400

Round to the nearest hundredth.

323.335

323.34

400

5.191 +51.91=

57.101

400

80.9 - .222=

80.678

400

6.5 X 6.53 =

42.445

500

What is the value of the 6?

6,000,342,111

6,000,000,000

500

Round to the nearest ten millions.

2,343,984,222.181

2,340,000,000

500

5.01+4.99=

10

500

.985 - .859=

.126

500

20.19 X 9.102 =

183.76938