Math Rocks

Multiplication

100

41 x 12

492

200

14 x 2.1

29.4

300

1.2 x 5.6

6.72

400

123 x 402

49,446

500

34.5 x 0.12

4.14

Exponents

100

5^{2 = ?}

25

200

Which  number is the base in 4^6?

4

300

3^{4 =?}

81

400

Put in exponential form...

4x4x4x4x4x4x4x4x4

4⁹

500

Solve 10⁷

10,000,000

Estimating

100

Estimate $4.12 x 5

$20

200

Estimate $12.35 x $0.99

$12

300

Estimate 43,781 x 21,321

800,000,000

400

Estimate $76.98 x 15

1,155

500

Joey went to the store and bought 5 pictures for $13.26 each.  About how much did Joey spend?

$65

Scientific Notation

100

Put 36,000,000 in scientific notation. 

3.6 x 10⁷

200

Put 215,000,000,000 in scientific notation

2.15 x 10¹¹

300

Put 3.214 x 10⁴ in standard form 

32,140

400

Put 2.0001 x 10⁷ in standard form

20,001,000

500

Put 23,000,000,100 in scientific notation

2.30000001 x 10¹¹

Patterns with Zero

100

200 x 300

6,000

200

200 x 800

160,000

300

1,000 x 0.2

200

400

200 x 0.04

8

500

5,000 x 0.03

150