Rounding isn't necessary. The distributive property tells you that 13 x 9 = 90 + 27 = 117
If you have to, you could estimate that 10 x 10 = 100
65 - 9 = 56
It is 5 + 4 = 9.
Their average is 22 and their difference is 9 so use 22 and 9 13*31 = 222 - 92 = 484 - 81 = 403
The estimate of 8.68 can be rounded to 9 when using standard rounding rules, where you round up if the digit in the tenths place is 5 or greater. If you’re looking for a simpler estimate for calculations, you might also round it down to 8. The context of the estimation will determine which rounding method is most appropriate.
9 + 63 = 72 lbs.
65 - 9 = 56
9X60
It is 5 + 4 = 9.
8/11 + 3/9 8/11 + 3/9
9+63+863+9
An estimate of 8.99 would be 9, as it is the closest whole number to 8.99. When estimating numbers, it is common practice to round to the nearest whole number for simplicity. In this case, rounding 8.99 to the nearest whole number results in 9.
The estimated answer is 20.
Their average is 22 and their difference is 9 so use 22 and 9 13*31 = 222 - 92 = 484 - 81 = 403
The estimate of 8.68 can be rounded to 9 when using standard rounding rules, where you round up if the digit in the tenths place is 5 or greater. If you’re looking for a simpler estimate for calculations, you might also round it down to 8. The context of the estimation will determine which rounding method is most appropriate.
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000
If you are rounding to the 9 on the right, the number stays the way it is. If you are rounding to the 9 on the left, it rounds to 489000000
9 + 63 = 72 lbs.