Unit 1 Review

Place Value

100

What place is the 3 in 43,052?

Hundredths place

200

What is the value of the 5 in 64,501?

500

300

What is the place of the 9 in 40,032.924?

Tenths place

400

What is the value of the 7 in 984.073?

7/100 or 0.07

500

What is the place and value of the 6 in 5902.096?

Thousandths place, 6/1000 or 0.006

Powers of Ten

100

What is 10⁴ in standard form?

10,000

200

What is 45 x 1,000?

45,000

300

What is 0.27 X 10⁵ ?

27,000

400

What is 75,079 X 1/100?

750.79

500

392,790 ÷ ________ = 39.279

1,000

Rounding

100

What is 9,326 rounded to the nearest hundreds place?

9,300

200

What is 37.84 rounded to the nearest whole number?

38

300

What is 5,036.79 rounded to the nearest tenth?

5,036.8

400

What is 34,096.973 rounded to the tenths place?

34,097

500

What is 49.02690567542334846453 rounded to the nearest hundredths place?

49.03

Estimating Sums and Differences

100

Estimate: 4.7 + 7.2 = ?

5+7= 12

200

Estimate: 39.85 - 21.38

40-21=19

300

Estimate: 264.95-65.21

265-65=200

400

Estimate: 29.9485376 + 49.86382926 = 

30+50=80

500

Estimate: 18.73 + 9.52 + 3.18

19+10+3=32

Miscellaneous

100

What is six hundred twenty-seven in standard form?

627

200

What is 492.035 in expanded form?

400 + 90 + 2 + 3/100 + 5/1,000

300

What is 62,094.207 in expanded notation?

(6x10,000)+(2x1,000)+(9x10)+(4x1)+(2x1/10)+(7x1/1,000)

400

What is wrong with the expanded notation?

649.038

(6x100,000)+(4x10,000)+(9x1,000)+(3x10)+(8x1)

They messed up thinking it was a comma and not a decimal!

500

Put into standard form: (6x1,000,000) + (7x10,000) + (8x1,000) + (9x100) + (5x1) + (4x0.01) + (3x0.001)

6,078,905.043