Page 137 - NUMINO TB_3B
P. 137
173_G3U30_G3U20˙—» ¿º 2011.3.23 11:32 AM ˘ ` 126 PDF_In 2540DPI 150LPI T

Activity 1 Sum and Difference of Weights

1 . Find the sum.

Find 2 lb 4 oz 1 lb 7 oz. 16 oz 1 lb
Add like units. So, 2 lb 4 oz 1 lb 7 oz

2 lb 14 oz =2 lb 4 oz 1 lb 7 oz 3 lb 11 oz.
1 lb 17 oz 3 lb 11 oz
3 lb 11 oz

a. b. c.
1 lb 14 oz 1 lb 10 oz 3 lb 13 oz
1 lb 18 oz 2 lb 15 oz 1 lb 16 oz

lb oz lb oz lb oz

d. 2 lb 11 oz 2 lb 7 oz lb oz
e. 4 lb 15 oz 2 lb 10 oz lb oz

f. 1 lb 12 oz 16 oz 1 lb
2 lb 18 oz So, 20 oz 1 lb 4 oz

lb oz 3 lb 20 oz

16 oz
4 lb 4 oz

126
   132   133   134   135   136   137   138   139   140   141   142