標題:
F.2 mahs easy
發問:
Estimate the values if the following and state the estimation strategies used. 1) 161.46 x 0.49 2) 305.73 x 0.33 3) 179.8 x 0.68
最佳解答:
1) 161.46 x 0.49 (rounding) = 160 x 0.5 = 80 2) 305.73 x 0.33 (rounding) = 305 x 0.3 = 91.5 3) 179.8 x 0.68 (rounding) = 200 x 0.7 = 140
其他解答:
此文章來自奇摩知識+如有不便請留言告知
1) 161.46 x 0.49 = 79.1154 2) 305.73 x 0.33 = 100.8909 3) 179.8 x 0.68 = 122.264|||||1)161.46 x 0.49 161.46 x 0.49 ~ 160 x 0.5 160 x 0.5 = 80 161.46 x 0.49 ~ 80 2) 305.73 x 0.33 305.73 x 0.33 ~ 300 x 0.3+ 6 x 0.3 300 x 0.3+ 6 x 0.3 = 91.8 305.73 x 0.33 ~ 91.8 3) 179.8 x 0.68 179.8 x 0.68 ~ 180 x 0.7 180 x 0.7 = 126 179.8 x 0.68 ~ 126|||||1) 161.46 x 0.49 = 79.1154 2) 305.73 x 0.33 = 100.8909 3) 179.8 x 0.68 = 122.264|||||1)79.1154 2)100.8909 3)122.264
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