Adding tenths
Word form
Adding hundredths
Adding thousand
Which is larger
100

0.3+0.1

0.4

100

.03 + .03

.06

100

0.5 or 0.2

0.5

200

0.7 + 0.2

0.9

200

.04+.05

.09

200

1/4 or 3/4

300

0.6 + 0.2

0.8

300

.12+.16

.28

300

4/5 or 2/5

4/5

400

0.8 + 0.1 

0.9

400

.29+.14

.43

400

0.09 or 0.87

0.87

500

0.2 +0.6

0.8

500

.50+.20

.70

500

0.99 or 0.100

0.100