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You will be divided into two teams:TEAM A and TEAM B.

Each team must work together to solve the following equations about percentage before the time runs out!

Calculate the percentage in your head. You have 15 seconds for each question.

TEAM A is up first.

Ready… Set… GO!!!

1% of 450TEAM A:

1% of 450

Time’s Up!

TEAM A:

1% of 450

is 4.5

TEAM A:

Now, TEAM B takes a turn.

Ready… Set… GO!!!

10% of 27TEAM B:

10% of 27TEAM B:

Time’s Up!

10% of 27

is 2.7

TEAM B:

10% of 165TEAM A:

10% of 165

Time’s Up!

TEAM A:

10% of 165

is 16.5

TEAM A:

50% of 30TEAM B:

50% of 30TEAM B:

Time’s Up!

50% of 30

is 15

TEAM B:

25% of 40TEAM A:

25% of 40

Time’s Up!

TEAM A:

25% of 40

is 16.5

TEAM A:

50% of 2.2TEAM B:

50% of 2.2TEAM B:

Time’s Up!

50% of 2.2

is 1.1

TEAM B:

25% of 10TEAM A:

25% of 10

Time’s Up!

TEAM A:

25% of 10

is 2.5

TEAM A:

1% of 5TEAM B:

1% of 5TEAM B:

Time’s Up!

1% of 5

is .05

TEAM B:

50% of 250TEAM A:

50% of 250

Time’s Up!

TEAM A:

50% of 250

is 125

TEAM A:

10% of 820TEAM B:

10% of 820TEAM B:

Time’s Up!

10% of 820

is .05

TEAM B:

1% of 21.5TEAM A:

1% of 21.5

Time’s Up!

TEAM A:

1% of 21.5

is .215

TEAM A:

100% of 14TEAM B:

100% of 14TEAM B:

Time’s Up!

100% of 14

is 14

TEAM B:

Find the value of the missing number n in each equation. You will have 30 seconds for each question.

TEAM A is up first.

50% of n is 8.TEAM A:

Time’s Up!

TEAM A:

50% of n is 8.

50% of n is 8.

n = 16

TEAM A:

15% of n is 7.5TEAM B:

TEAM B:

Time’s Up!

15% of n is 7.5

15% of n is 7.5

n = 50

TEAM B:

7% of n is 8.75TEAM A:

Time’s Up!

TEAM A:

7% of n is 8.75

7% of n is 8.75

n = 125

TEAM A:

120% of n is 96TEAM B:

TEAM B:

Time’s Up!

120% of n is 96

120% of n is 96

n = 80

TEAM B:

4.5% of n is 112.5TEAM A:

Time’s Up!

TEAM A:

4.5% of n is 112.5

4.5% of n is 112.5

n = 2500

TEAM A:

35.8% of n is 71.6TEAM B:

TEAM B:

Time’s Up!

35.8% of n is 71.6

35.8% of n is 71.6

n = 200

TEAM B:

Calculate the percentage in your head. You have 15 seconds for each one.

TEAM A is up!

10% of 1250TEAM A:

10% of 1250

Time’s Up!

TEAM A:

10% of 1250

is 125

TEAM A:

25% of 88TEAM B:

25% of 88TEAM B:

Time’s Up!

25% of 88

is 22

TEAM B:

20% of 400TEAM A:

20% of 400

Time’s Up!

TEAM A:

20% of 400

is 80

TEAM A:

15% of 300TEAM B:

15% of 300TEAM B:

Time’s Up!

15% of 300

is 45

TEAM B:

75% of 2000TEAM A:

75% of 2000

Time’s Up!

TEAM A:

75% of 2000

is 1500

TEAM A:

30% of 60TEAM B:

30% of 60TEAM B:

Time’s Up!

30% of 60

is 18

TEAM B:

You have 30 seconds to solve the following word problems.

20% of a quantity is 40.

What is the quantity?

TEAM A:

Time’s Up!

TEAM A:

20% of a quantity is 40.

What is the quantity?

TEAM A:

The quantity is 200.

10% of a number is 35. What is the

number?

TEAM B:

Time’s Up!

TEAM B:

10% of a number is 35. What is the

number?

TEAM B:

The number is 350.

Solve the following equations in your head. This time you only have 10 seconds!

50% of 220TEAM A:

50% of 220

Time’s Up!

TEAM A:

50% of 220

is 110

TEAM A:

50% of 82TEAM B:

50% of 82TEAM B:

Time’s Up!

50% of 82

is 41

TEAM B:

25% of 800TEAM A:

25% of 800

Time’s Up!

TEAM A:

25% of 800

is 200

TEAM A:

25% of 60TEAM B:

25% of 60TEAM B:

Time’s Up!

25% of 60

is 15

TEAM B:

25% of 280TEAM A:

25% of 280

Time’s Up!

TEAM A:

25% of 280

is 70

TEAM A:

50% of 4600TEAM B:

50% of 4600TEAM B:

Time’s Up!

50% of 4600

is 2300

TEAM B:

50% of 12TEAM A:

50% of 12

Time’s Up!

TEAM A:

50% of 12

is 6

TEAM A:

75% of 800TEAM B:

75% of 800TEAM B:

Time’s Up!

75% of 800

is 600

TEAM B:

75% of 280TEAM A:

75% of 280

Time’s Up!

TEAM A:

75% of 280

is 210

TEAM A:

75% of 60TEAM B:

75% of 60TEAM B:

Time’s Up!

75% of 60

is 45

TEAM B:

Find the value of the missing number x in each equation. You will have 20 seconds for each question.

50% of x is 150.TEAM A:

Time’s Up!

TEAM A:

50% of x is 150.

50% of x is 150.

x = 300

TEAM A:

25% of x is 120TEAM B:

TEAM B:

Time’s Up!

25% of x is 120

25% of x is 120

x = 480

TEAM B:

75% of x is 150.TEAM A:

Time’s Up!

TEAM A:

75% of x is 150.

75% of x is 150.

x = 200

TEAM A:

50% of x is 7TEAM B:

50% of x is 7TEAM B:

Time’s Up!

50% of x is 7

x = 14

TEAM B:

25% of x is 6.TEAM A:

25% of x is 6.

Time’s Up!

TEAM A:

25% of x is 6.

x = 24

TEAM A:

75% of x is 9TEAM B:

75% of x is 9TEAM B:

Time’s Up!

75% of x is 9

x = 12

TEAM B:

10% of x is 31.TEAM A:

Time’s Up!

TEAM A:

10% of x is 31.

10% of x is 31.

x = 310

TEAM A:

20% of x is 18TEAM B:

20% of x is 18TEAM B:

Time’s Up!

20% of x is 18

x = 90

TEAM B:

5% of x is 35.TEAM A:

5% of x is 35.

Time’s Up!

TEAM A:

5% of x is 35.

x = 700

TEAM A:

10% of x is 4TEAM B:

10% of x is 4TEAM B:

Time’s Up!

10% of x is 4

x = 40

TEAM B:

20% of x is 86.TEAM A:

Time’s Up!

TEAM A:

20% of x is 86.

20% of x is 86.

x = 430

TEAM A:

5% of x is 2TEAM B:

5% of x is 2TEAM B:

Time’s Up!

5% of x is 2

x = 40

TEAM B: