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Place Value
Rounding
Word Problems
Estimating Sums/Differences
Adding/Subtracting Decimals
100
What is the place of the 2 in the following number? 42,005
thousands
100
Round 149 to the nearest ten.
150
100
Benjy read 250 pages on Monday. He read twice as many pages on Tuesday. How many pages did he read altogether?
750 pages
100
Estimate the sum by rounding: 18+52
20+50=70
100
17.3+8.5
25.8
200
What is the value of the 7 in the following number? 843,070,111
70,000
200
Round $187.56 to the nearest dollar.
$188.00
200
Jill earned $15.25 doing chores. Jack earned $1.75 less than her. How much money did Jack earn?
$13.50
200
Estimate the difference by rounding. 103-78
100-80=20
200
100.55-54.03
46.52
300
Name the place and value of the 4 in the following number. 123,456,789
hundred thousands; 400,000
300
Round 1230.045 to the nearest tenth.
1230.0
300
Billy is practicing the long jump for his track meet. He jumps 4 feet 0.5 inches on his first try. He jumps 0.4 inches further on each try. How far does he jump on his third jump?
4 feet 1.3 inches
300
Estimate the sum by rounding to the nearest tenth. 1.89+2.33
1.9+2.3=4.2
300
0.2+75.004+0.123
75.143
400
1. What form is the following number written in? 2. How would you read the number out loud?
400+70+3+0.01+0.008 four hundred seventy-three and eighteen thousandths
400
Round 4,351.678 to the nearest hundredth.
4,351.68
400
Ms. Goehring swims 12 laps on Monday. She swims twice as many on Tuesday. She swim three times as many on Wednesday as she swam on Monday. On Thursday she takes a day off. How many laps has she completed so far this week?
72 laps
400
Estimate the difference by rounding to the nearest hundredth. 15.345-5.039
15.35-5.04=10.31
400
1,010.10-875.05
135.05
500
Write the following number in standard, expanded, and short word form. One billion, eight hundred sixty million, three hundred twenty-five
Standard: 1,860,000,325 Expanded: 1,000,000,000+800,000,000+60,000,000+300+20+5 Short Word Form: 1 billion, 860 million, 325
500
Round 7,864.123 to the nearest thousandth.
7,864.123
500
Pat and Paige run a race together. Pat finishes in 1 hour 3.2 seconds. Paige finishes in 59 minutes and 59.9 seconds. How much faster was Paige?
3.3 seconds
500
Nick has $1,996 in his bank account. Shannon has $2,335 in hers. Approximately how much money do they have together?
$2,000+$2,000=$4,000 or $2,000+$2,300=$4,300
500
0.0090+0.0090+0.09
0.108