Rounding and estimating
Round 56.24 to the nearest tenth.
👉 Answer: 56.2
What is 5.92 + 3.48?
9.40
13.5 – 2.8
10.7
Owen spends $1.29 on a pen and $0.38 on an eraser. How much did he spend?
$1.67
True or False – One full decimal grid equals $1.00.
True
Estimate the sum of $4.28, $21.35, and $14.65 by rounding to the nearest tenth.
$40.4o
8.73+3.47
12.2
14.2 – 5.5
8.7
A rectangular yoga studio is 25.15 ft long and 13.62 ft wide. What is the exact perimeter?
77.54 ft
Why is rounding to the nearest tenth sometimes more accurate than rounding to the nearest whole number?
Because it keeps more of the original value and is closer to the exact number.
Round 25.15 and 13.62 to the nearest whole number. What is their estimated sum?
39
3.74 + 5.46
9.2
4.56 – 3.88
0.68
Ricardo pays with four $20 bills after spending $65.38. How much change does he get?
$14.62
Write an equation to model the perimeter of a yoga studio (length = 25 ft, width = 14 ft).
25 + 14 + 25 + 14 = 78 ft
Estimate the perimeter of a rectangle with length 25.15 ft and width 13.62 ft by rounding to the nearest tenth.
77.6 ft
Sophie’s shelves are 3.88 ft, 2.63 ft, and 4.56 ft long. What is the combined length?
11.07 ft
Ms. Perry sells 40.44 lbs of apples. Mr. Jones sells 34.5 lbs. What is the difference?
5.94 lbs
Which decimal makes this true? 5.26 + ___ = 13.63
65.2 g
Estimate the sum of 12.65 + 3.48 + 9.89 by rounding to the nearest tenth.
12.7 + 3.5 + 9.9 = 26.1
Round 77.54 to the nearest tenth.
77.5
Ricardo buys shoes for $55.60 and a hat for $9.78. What is the total?
$65.38
Sophie’s bottom shelf is 4.56 ft and her top shelf is 3.88 ft. How much longer is the bottom shelf?
0.68 ft
Two rocks weigh 56.24 g and 8.98 g. What is their estimated total mass (nearest tenth)?
65.2 g
Four farmers sold 8.6 lbs, 23.5 lbs, 34.5 lbs, and 40.44 lbs of apples. Who sold the most and how much more than the second-highest?
Ms. Perry sold the most (40.44 lbs), 5.94 lbs more than Mr. Jones (34.5 lbs).