Math Benchmark 3 Review

Numbers in Word Form

100

1.54

one and fifty-four hundredths

200

203.677

two hundred three and six hundred seventy-four thousandths

300

Four hundred thirteen and 9 thousandths

413.009

400

1,980,544.2

One million nine hundred eighty thousand five hundred forty-four and two tenths

500

Five million eight hundred sixty-five thousand three hundred twenty-seven and one hundred seventy-four thousandths

5,865,327.174

Exponents

100

10 to the third power

10³ or 1,000

200

2.14 x 10⁴

21,400

300

987.5 / 10²

9.875

400

3.96 / 10³

0.00396 or .00396

500

243.578 x 10⁸

24,357,800,000

Adding Decimals

100

2.5 + 8.09

10.59

200

8.305 + 0.723

9.028

300

2.355 + 19.0456

21.4096

400

140.56 + 17.333

157.893

500

1,870.623 + 12,414.055

14,284.678

Subtracting Decimals

100

2.5 - 1.2

1.3

200

13.44 - 8.05

5.39

300

87.322 - 66.09

21.232

400

5,602.7 - 482.51

5,120.19

500

24,973.086 - 7,884.213

17,088.873