It is 5 + 4 = 9.
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It is: 140+10+70 = 220
100. rounding to the tenth only suggests you look at the first number(being the rightmost number) and round accourdingly
18.70
398.22 * 93.87 = 398 * 94 = (400 - 2)*(90 + 4) = 36000 + 1600 - 180 - 8 = 37,412 The exact answer, using a calculator, is 37380.9114. So the estimate is too large by 0.08%
When rounding 46.2 to the nearest whole number, we look at the first decimal place, which is 2. Since 2 is less than 5, we round down. Therefore, 46.2 rounded to the nearest whole number is 46.