Round Decimals
Estimate Decimal Sums and Differences
Add and Subtract Decimals
Problem Solving
100
Round to the nearest whole number. 680.46
What is 680
100
Estimate by rounding to the nearest whole number. 5.1-1.7=
What is 3
100
$4.79+$5.21=
What is $10
100
The estimated population of NYC for the year 2010 is about 8.6 million people. The estimated population of Philadelphia for the year 2010 is about 5.6 million people. About how many more people will live in either NYC or Philadelphia in 2010?
What is 8.6+5.6=14.2 or 9+6=15 million
200
Round to the nearest whole number. 14.376
What is 14
200
Estimate by rounding to the nearest whole number. $44.63+14.35=
What is $59
200
$5.93-$2.59=
What is $3.34
200
Sally buys a sweater for $18.75. Then she buys a shirt for $17.50. What is the total cost of the items?
What is $36.25
300
Round to the nearest whole number. 302.63
What is 303
300
Estimate by rounding to the nearest whole number. 349.29+34.616=
What is 384
300
$7.43+$6.29=
What is $13.72
300
The Jones family drove 118.5 miles to the shore. Then they drove 25.8 miles to a campsite. How far did they drive altogether?
What is 145.3 miles
400
Round to the place of the four. 236.437
What is 236.400 or 236.4
400
Estimate by rounding to the nearest whole number. $23.82-20.49=
What is $4
400
$15.00-$4.38=
What is $10.62
400
At the craft fair, Janie and Alice had a booth to sell necklaces they had made. They earned a total of $115.75. Janie took $67.30 for the necklaces she had made. How much did Alice take?
What is $48.45
500
Round to the place of the 9. 125.096
What is 125.10
500
Estimate by rounding to the nearest whole number. $527.49-$248.21=
What is 279
500
$13.48+$11.27+$12.58=
What is $37.33
500
Leslie wants to buy5 donuts. The donuts cost $0.65 each. Leslie can buy a box of six donuts for $3.00. How much money will Leslie save if she buys the box of 6 instead of 5 individual donuts?
What is $0.25
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