7.8+31.39+6.95
First, round the highest place value of each number: 400+200+700=1300 Second, round the second highest place value of each number: 390+190+740=1320 The range to estimate the sum is 1300 to 1320. The actual sum is 1321, which higher than the range. However, the actual sum may lie within the obtained range. LEF
A reasonable estimate of the sum of 78 and 119 is 197.
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.
Estimate the minimum value, A. Estimate the maximum value, B. The estimated range is from A to B.
The range of a single number - with or without a decimal - is zero.
7.8+31.39+6.95
1,400
between 20 and 30
First, round the highest place value of each number: 400+200+700=1300 Second, round the second highest place value of each number: 390+190+740=1320 The range to estimate the sum is 1300 to 1320. The actual sum is 1321, which higher than the range. However, the actual sum may lie within the obtained range. LEF
The largest value is 17.563 The smallest is 2.31 So the range is 17.563 - 2.31 = 15.253
Round the highest and lowest numbers. 25 - 5 = 20
Round the highest and lowest numbers. 25 - 5 = 20
The sum is 2.05 and you don;t need to estimate such a simple sum!
That equals 16.7 which would be between 15 and 18.
A reasonable estimate of the sum of 78 and 119 is 197.
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.