Add It Up
Find the sum: 4.6 + 3.2
7.8
Find the difference: 9.8 - 4.3
5.5
Estimate by rounding to the nearest whole number: 4.7 + 3.2
8
Find the missing number: n + 3.4 = 8.9
5.5
Ava used 2.75 meters of ribbon and then 1.6 more meters. How much ribbon did she use?
4.35 meters
Find the sum: 12.45 + 6.3
18.75
Find the difference: 15.62 - 7.4
8.22
Estimate by rounding to the nearest whole number: 12.45 - 6.8
5
Find the missing number: 12.75 + n = 20
7.25
Noah had $10.00 and spent $3.68. How much money remains?
$6.32
Find the sum: 7.08 + 14.967
22.047
Find the difference: 20 - 6.785
13.215
Use compatible whole numbers to estimate: 19.86 + 31.12
About 51
Find the missing number: n - 6.48 = 9.27
15.75
An aquarium held 12.45 liters. Then 8.675 liters were added. How much water is in it now?
21.125 liters
Find the sum: 6.4 + 12.08 + 0.925
19.405
Find the difference: 42.003 - 17.89
24.113
Estimate by rounding to the nearest whole number: 63.74 - 28.19
36
Find the missing number: 34.6 - n = 18.75
15.85
Liam had $20.00. He bought items costing $4.75 and $6.89. How much money remains?
$8.36
Find the sum: 23.6 + 8.079 + 0.45
32.129
Find the difference: 100 - 47.586
52.414
A student says 17.89 + 26.14 is about 54. Is that reasonable? Give a better estimate.
No; about 44
Find the missing addend: 18.75 + 9.68 + n = 52.4
23.97
Mia walked 18.625 miles. Jordan walked 3.78 fewer miles than Mia. How far did they walk altogether?
33.47 miles