1,400
between 20 and 30
800
71 + 847 = 918 165 + 72 = 237 192 + 192 = 384
Round down and round up. The answer will be between 20 (7 + 13) and 22 (8 + 14)
1,400
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
To estimate the sum of 3.89, 42.71, and 12.32, we can round each number to the nearest whole number. This gives us 4, 43, and 12. Adding these rounded numbers gives us an estimated sum of 59. However, it's important to note that this is just an estimation and the actual sum will be slightly higher than this.
between 20 and 30
7.000
Notice that each of the three numbers is rather close to 9,000. The estimated sum is 27,000.
800
71 + 847 = 918 165 + 72 = 237 192 + 192 = 384
919
49800
The range of a single number - with or without a decimal - is zero.
Round down and round up. The answer will be between 20 (7 + 13) and 22 (8 + 14)