Ch. 2 Test Review Game

The Jefferson football teams played several games this season. Each team's record is shown in the table pictured. Find the winning average of each team written as a decimal. Then determine if the winning averages are terminating decimals. (You should have two answers; one for Varsity and one for JR Varsity)

The Jefferson football teams played several games this season. Each team's record is shown in the table. Which team had a better season?

• Varsity

• JR Varsity

Answer explanation

A local store sells bags of game pieces with various colors. Four out of every 19 pieces are red. The store sold a bag with 76 games pieces. What number of the game pieces are red?

• -0.13 & 0.13

• -1.03 & 1.03

• -13 & 13

• -1.3 & 1.3

• -0.13 & 0.13

Answer explanation

Since we have an even number of decimal places under our radical sign, we can view 1.69 as a whole number 169.

169 is a perfect square. 13 x 13 = 169

Now we know that the square root of the perfect square 1.69 involved the two numbers 1 and 3.

We need to determine where our decimal will be placed within these numbers to equal the perfect square under our radical 1.69.

Test different equations moving the decimal in order to determine the proper square root of the perfect square 1.69.

.13 x .13 = 0.0169

1.3 x 1.3 = 1.69

Now we know that the square root of the perfect square 1.69 is 1.3; however, we must go one step further because the question asked for the positive and negative value of the square root.

Therefore, the correct answer is -1.3 & 1.3

• • 0.66942

• • - 0.8181 . . . .

Answer explanation

Select all numbers that are rational numbers.

• -6

• 14.2

• 1.4296758 . . . . .

Select all irrational numbers.

• 8.567492 . . . .

• 1,453

True or false:

All integers are natural numbers.

• True

• False