Math Review

PLACE VALUE

200

The value of the 3 in 439 is ______ times the value of the 3 in 113. 

10 times 

400

The value of the 9 is 9,000 is ______ times the value of the 9 in 90. 

100 times 

600

The value of the 2 in 632,589 is _______ times the value of the 2 in 987,521. 

100 times

600

The value of the digit 4 in the 15.432 is _______ times the value of the 4 in 12.284. 

100 times 

800

The value of the digit 7 in 117.234 is _______ times the value of the 7 in 99.710. 

10 times 

POWERS OF 10

200

Find the product. 21 x 10 ³

21,000

400

Find the product.  3 x 10 ² 

300

600

Write two ways to show 45 x 10 ⁵ 

45 x (10 x 10 x10 x10 x10) 

45 x 100,000 

600

Find the product. 8.09 x 10 ⁴

80,900

800

Find the product. 0.224 x 10³

224

NUMBER FORMS

200

Write the expanded form for: 0.92

( 9 x 1/10) + (2 x 1/100) 

400

Write the expanded form for: 23.192

(2 x 10) + (3 x 1)+ (1 x 1/10) + (9 x 1/100) + (2 x 1/1000)

or 

 20 + 3 + (1 x 1/10) + (9 x 1/100) + (2 x 1/1000)

600

Write the expanded form for: 445.9 

(4 x 100) + (4 x 10) + (5 x 1) + (9 x 1/10)

or 

400 + 40 + 5 + (9 x 1/10) 

600

What is the standard form for this: (4x100) + (5x1) + (2 x 1/10) + (9 x 1/100) 

405.29

800

What is the standard form for (9 x 1,000) + (4 x 100) + (3 x 1) + (1 x 1/10) + (6 x 1/100) + (8 x 1/1000)

9,401.158

INEQUALITIES

200

Compare this inequality using > , < or = : 

258.90 ___ 65.349

258.90 > 65.349 

400

Write a number to make this inequality true: 

_______ > 65.932

Any number greater than 65.932

600

Write a number to make this inequality true: 

993.258 > ________

Any number less than 993.258

600

Compare this inequality using < , >  or = : 

(2 x 1,000) + (5 x 100) + (3 x 1/10) ____ 20,435

(2 x 1,000) + (5 x 100) + (3 x 1/10) < 20,435

800

Compare this inequality using < , >  or = : 

(7 x 1,000) + (8 x 100) + (5 x1) + (8 x 1/10) ______ 781

(7 x 1,000)+ (8 x 100) + (5 x1) + (8 x 1/10) > 781

ROUNDING

200

Round to the nearest hundredth. 

44.278

44.29

400

Round to the nearest tenth. 

930.125

930.1

600

Round to the nearest whole. 

324.55

325

600

Round to the nearest whole. 

1,024.89

1,025

800

Round to the nearest whole. 

10,000.999

10,001

+/- DECIMALS

200

Find the sum. 

22.39 + 14.23

36.62

400

Find the sum. 

275.11 + 12.93

288.04

600

Find the sum. 

649.79 + 10.456

654.246

600

Find the difference. 

900.45 - 145.12=

755.33

800

Find the difference. 

10 - 9.12 =

0.88

MULTIPLICATION

200

1.21 x 10² = 

121

400

0.45 x 0.15 = 

0.0675

600

0.534 x 10³ =

5,340

600

2 x 0.32 = 

0.64

800

232 x 2.28 = 

528.96