Rounding Decimals
Round 78.463 to the nearest tenth.
78.5
34.78 + 6.45 = ?
41.23
54.92 – 38.45 = ?
16.47
A book costs $14.75 and a notebook costs $6.95. What’s the total cost?
$21.70
A rectangle has a length of 5.6 cm and a width of 3.4 cm.
What is the perimeter?
2 × (5.6 + 3.4) = 18.0 cm
Round 205.987 to the nearest whole number.
206
125.93 + 74.065 = ?
199.995
200.005 – 176.98 = ?
23.025
Sophia had $250.50. She spent $127.89 on clothes. How much money does she have left?
$122.61
A square has side lengths of 7.25 m.
What is the perimeter?
4 × 7.25 = 29.0 m
Round 9.999 to the nearest hundredth.
10.00
48.325 + 29.7 = ?
78.025
65.8 – 29.734 = ?
36.066
A runner jogs 4.375 miles on Monday, 6.42 miles on Tuesday, and 7.05 miles on Wednesday. About how many miles total did she run (nearest tenth)?
17.8 miles
A rectangle has a length of 12.65 in and a width of 9.75 in.
What is the perimeter?
2 × (12.65 + 9.75) = 44.8 in
Round 1,245.3768 to the nearest thousandth.
1,245.377
7.256 + 9.873 = ?
17.129
1000.25 – 987.563 = ?
12.687
A jug of juice weighs 12.5 kg. After pouring out 8.735 kg, how much juice is left?
3.765kg
A rectangle has a length of 23.6 m and a width of 18.45 m.
What is the perimeter?
2 × (23.6 + 18.45) = 2 × 42.05 = 84.1 m
Round 0.00489 to the nearest hundredth
0.00
456.87 + 389.65 = ?
846.52
423.875 – 216.439 = ?
207.436
A laptop costs $849.95. If you pay with $1,000, how much change should you get?
$150.05
A rectangular playground is 45.5 m long and 28.75 m wide. A fence is being built around the outside.
How many meters of fencing are needed?
2 × (45.5 + 28.75) = 148.5 m