The data wasn't provided to answer this question. The range in math is the highest number minus the lowest number. For example 30,20,10,5 the range would be 30 minus 5 which equals 25.
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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.