Adding Decimals
Subtracting Decimals
Estimating Decimals
Word problems
100
What is the sum of
6.43
100
Solve
15.62 − 7.85 = ______
7.77
100
Estimate to the ones place to find the sum.
4.6 + 2.3 ≈
About 7
100
Emma bought a notebook for $4.75 and a folder for $2.60. How much did she spend altogether?
$7.35
200
What is the sum
45.79 +32.01
77.8
200
Find the Missing Number:
24.50 − ______ = 16.75
7.75
200
Estimate to the ones place to find the sum
14.6 − 6.8 ≈
about 22
200
Sarah bought a notebook for $6.75 and a pencil case for $4.50. How much did she spend altogether?
$11.25
300
True or False
7.25 + 3.8 = 11.07
False 11.05
300
A ribbon is 15.75 meters long. After using some of the ribbon, 6.48 meters are left.
Whats the equation and the answer
15.75 − 6.48
→ The amount of ribbon used is 9.27 meters.
300
Estimate to the tenths place to find the sum
27.45 + 13.72 ≈
41
300
A pitcher had 12.5 liters of water. After some was poured out, 7.25 liters remained. How many liters were poured out?
5.25 liters
400
Find the Sum
45 +36.79 + 7.09 =
88.88
400
Which decimal makes this equation true?
7.15
400
estimate to the tenths place to find the difference
68.91 − 24.56 ≈
44.3
400
A school bought 24.65 pounds of apples and 18.32 pounds of oranges. About how many pounds of fruit did they buy altogether? Round each number to the nearest ones place before solving.
About 43 pounds
500
A grocery store has three items that cost $12.75, $8.96, and $15.48.
How much do all three items cost altogether?
$37.19
500
Find the Error
A student solved the problem below:
20.50 − 8.75 = 12.25
Is the student's answer correct?
Yes
500
Estimate to the tenths place to find the difference
65.759 - 23.831 =
41.8
500
Kayla’s dollhouse has 15.15 square feet downstairs and 6.45 square feet upstairs. What is the estimated total area if you round the decimals to the nearest ones place.
90