Gr8 1-1 to 1-5 Review

Repeating Dec. to Fract.

100

0.777....

7/9

200

0.636363...

63/99

300

0.2666...

24/90

400

0.8111...

73/90

500

3.7444...

3 67/90

Is it rational?

100

-2 3/4

Yes; all whole numbers and fractions are rational.

200

0.4234805...

No; the decimal does not repeat or terminate.

300

sqrt(196)

Yes; 196 is a perfect square. 

sqrt(196)=13

400

0.17171717...

Yes; repeating & terminating decimals are rational.

500

sqrt(110)

No; 110 is not a perfect square.

Approx. Square Roots

100

Approximate

sqrt(35)

 to the nearest tenth.

5.9

200

Approximate 

sqrt(83)

to the nearest tenth.

9.1

300

Approximate

sqrt(22)

 to the nearest tenth.

4.7

400

Approximate

sqrt(12)

 to the nearest tenth.

3.5

500

Approximate

sqrt(59)

 to the nearest tenth.

7.7

Square & Cube Roots

100

sqrt(25)

5

200

Cube root of 27

3

300

sqrt(169)

13

400

Cube root of 729

9

500

Cube root of 216

6

Square & Cube Root Equations

100

Find the value of x. 

x^2 = 100

x=+-10

200

Find the value of x. 

x^3=64

x=4

300

Find the value of x.

x^2=81

x=+-9

400

Find the value of x.

x^3=-343

x=-7

500

Mrs. Drew wants to build a square sandbox with an area of 144 square feet. What would the length of one side of the box be? 

12 feet