Adding Decimals
8.73 + 3.47
12.2
5.32 + ____ = 11.47
6.15
A rectangular yoga studio is 22.37 feet long and 16.84 feet wide.
Round the length and width to the nearest whole number. Then estimate the perimeter of the yoga studio. Write an equation to model your work.
78 feet
Sophie put up three bookshelves in her room. The top shelf is 2.78 feet long, the middle shelf is 4.83 feet long, and the bottom shelf is 5.66 feet long.
How much longer is the bottom shelf than the top shelf?
2.88 feet
Estimate the sum of $4.38, $21.45, and $14.75 by rounding each number to the nearest tenth.
40.7
8.3-4.6
3.7
A rectangular yoga studio is 22.37 feet long and 16.84 feet wide.
Round the length and width to the nearest tenth. Then estimate the perimeter of the yoga studio. Write an equation to model your work.
22.37 + 22.37 + 16.84 + 16.84
78.4 feet
Samantha bought a jacket for $48.25
and a scarf for $12.90.
How much did she spend in all?
If she paid with 3 twenty-dollar bills, how much change did she get?
Samantha spent $61.15 in all and received $18.85 in change.
Two rock samples have masses of 51.36 grams and 4.98 grams. What is the estimated total mass if you round the decimals to the nearest tenth?
56.4
Samantha bought 3.75 pounds of apples. She used 1.48 pounds to make a pie. How many pounds of apples does she have left?
2.27 pounds
A rectangular yoga studio is 22.37 feet long and 16.84 feet wide.
Find the exact perimeter. Write an equation to model your work.
22.37 + 22.37 + 16.84 + 16.84
78.42
Mr. Brown sold 12.75 pounds of peaches,
Ms. Green sold 28.3 pounds of peaches,
Mr. White sold 19.6 pounds of peaches,
and Ms. Black sold 25.8 pounds of peaches at the farmer’s market.
Which two people sold the most peaches?
What is the difference between the amounts these people sold? Explain.
The two people who sold the most peaches are Ms. Green (28.3 lb) and Ms. Black (25.8 lb).
The difference is 28.3 – 25.8 = 2.5 lb.