Use appropriate estimation strategies to estimate the values of the following expressions
4.07乘19.98+12.1除0.67
the answer is 98
F.1 MATHappropriate estimation
2012-01-13 5:38 pm
回答 (2)
2012-01-14 4:28 am
Answer : 98
4.07 ~ 4; 19.98 ~ 20, 12.1 ~ 12 , 0.67 ~ 2/3
4.07 * 19.98 + 12.1 / 0.67
~ 4 * 20 + 12 / (2/3)
= 80 + 18
= 98
So, the estimation is 98
4.07 ~ 4; 19.98 ~ 20, 12.1 ~ 12 , 0.67 ~ 2/3
4.07 * 19.98 + 12.1 / 0.67
~ 4 * 20 + 12 / (2/3)
= 80 + 18
= 98
So, the estimation is 98
收錄日期: 2021-04-26 19:17:15
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