Show:
Adding Decimals
Subtracting Decimals
Rounding Tenth Place
Subtracting or Adding Rounded Decimals
Finding the Perimeter
100

1.2 + 2.3=?

3.5

100

3.2 - 1.2=?

2

100

6.12

6.1

100

Round the tenth place the solve:

8.81 + 4.98=?

13.8

100

Find the perimeter of a square:

W= 5.32ft

L= 7.1ft

24.84 ft

200

5.8 + 2.3=?

8.1

200

10.65 - 10.65=?

0

200

61.732

61.7

200

Round the hundredth’s place then solve:

9.023 - 6.984=?

2.04

200

Find the perimeter of a triangle (3 sides):

Side= 7.98 inches

23.94 inches

300

9 + 7.91=?

16.91

300

8 - 5.31=?

2.69

300

8.56

8.6

300

Round to a whole number then solve:

9.8 - 9.8=?

0

300

Find the perimeter of a pentagon (has 5 sides):

Side= 0.239 centimeters 


1.195 centimeters

400

3.21 + 8.2=?

11.41

400

10.67 - 8.09 - 0.43=?

2.15

400

9.05

9.1
400

Round the thousandth’s place then solve:

8.9056 - 8.6034=?

0.303

400

Find the perimeter of a kite (2 short, 2 long sides):

Short side: 7.89 inches

Long side:14.09 inches

43.96 inches

500

3.05 + 2.8 + 2.768=?

8.618

500

3.099 - 1.76 - 0.23=?

1.109

500

15.9856

16

500

Round the tenths place and solve:

5.45 + 0.01=? 

5.5

500

Find the perimeter of a heptagon (7 sides):

Side: 7.0983 meters

49.6881 meters