(Fin) 7th Math Battle - Review

This is Mental

200

Mental Math

4+(-2)

2

400

-2+3

1

600

-7-2

-9

800

5-(-5)

10

1000

-8-(-7)

-1

In Order

200

4+2*2

8

400

6div2-3

0

600

4+2-3

3

800

4*3+2

14

1000

4div2*4

8

Rational dear Watson

200

1/3 xx 2/3

2/9

400

1/2 +1/3

5/6

600

4.21 - 3.3

0.91

800

2/5 div 4/3

3/10

1000

2.3 xx 1.4

3.22

Step it Out

200

x+3=4

x=1

400

x - 7 = 2

x=9

600

4x=24

x=6

800

x/5=7

x=35

1000

4-x = 6

x=-2

Ring Around

200

Area of Circle:

Radus = 1

3.14

400

Circumference of a Circle:

Diameter = 2

6.28

600

Area of the Circle:

Radius = 6

113.04

800

Circumference of the Circle:

Radius: 5

31.4

1000

Area of the Circle:

Diameter = 8

50.24

Transformers

200

Rewrite into a Percent:

0.5

50%

400

Rewrite into a fraction:

0.1

1/10

600

Rewrite into a decimal:

1/5

0.2

800

Rewrite into a fraction:

0.overline2

2/9

1000

Rewrite into a fraction:

2%

1/50

It's all about the Money

200

Find the final cost:

Cost = $8

Tax = 6%

$8.48

400

Find the final cost:

Cost = $13

Tip = 18%

$15.34

600

Find the final cost:

Cost = $200

Markup = 15%

$230

800

Find the final cost:

Cost = $50

Discount = 10%

$45

1000

Find the final cost:

Cost = $18

Tax = 9.5%

$19.71