Rounding
Round 456 to the nearest hundred
500
Estimate the sum of 49 + 22
70
Add 9.1 + 7.21
16.31
Subtract 16.82 - 5.21
11.61
An average person's upper leg bone measures 19.88 in. and the lower leg bone measures 16.94 in. How much longer is the upper leg bone than the lower leg bone?
2.94 inches.
Round 3,502,350 to the nearest hundred thousand.
3,500,000
Estimate the difference of 232-97.
100
Add 13.094 + 4.903
17.997
Subtract 43.80 - 16.00
27.8
1980
Round 84.732 to the nearest tenth.
84.7
Estimate the difference of 35.7 - 7.8
28
Add 0.868 + 15.973
16.841
Subtract 43.905 - 7.526
36.379
One football stadium, built in 1982, has 64,035 seats. Another stadium, built in 1987, has 74,916 seats. How many more seats does the newer stadium have?
10,881
Round 1,643.823 to the nearest whole number.
1,644
Estimate:
$9.10 + $48.50 + 5.99
$64
Add 5,326.256 + .835
5,327.091
Subtract 7.094 - 3.657
3.437
In Helen's class, there are 13 girls and 17 boys. Megan's class has the same number of students, but there are 20 girls in her class. How many boys are in Megan's class?
10 boys.
Round 7,369,593,745,902,850.356 to the nearest ten billions place.
7,369,590,000,000,000
Estimate:
70,203,723 + 2,397,825
68,000,000
4,321.532 + 4.74
4,326.272
Subtract 65.29 -28.038
37.252
Pedro earned money doing different jobs for neighbors. He kept a table of what he earned. If Pedro bought a magazine subscription for $16.95 from his earnings, how much money did he have left?
Job:
Mowing Lawn: $13.50
Raking Leaves: $11.00
Walking Dogs: $14.75
$22.30