Review For Test #3

Place ValueDecimals

to Fractions

Prime/Composite

Equivalent Fractions

Rounding

10 10 10 10 10

20 20 20 20 20

30 30 30 30 30

40 40 40 40 40

50 50 50 50 50

Question 1 - 10

What does the digit 9 represent in the number 935,254,683,112?

a. Nine billionb. Nine hundred billionc. Nine million

Answer 1 – 10

b. Nine hundred billion

Question 1 - 20

The TV reporter reported that WACO received four and sixty-nine hundredths inches of rain last week. How is this number written as a decimal?

a. 4.69b. 4.069c. 4,069

Answer 1 – 20

a. 4.69

Question 1 - 30

Use the digits 7, 9, 2, and 4 to write the largest possible whole number in the spaces below. Each digit is only used once.

____,____ ____ ____

Answer 1 – 30

9,742

Question 1 - 40

Which value is greater than seventy-eight thousand five hundred thirty?

a. 78,530b. Fifty-two thousandc. Ninety thousand

Answer 1 – 40

c. Ninety thousand

Question 1 - 50Which decimal number should be placed in the blank so that the numbers are in order from greatest to least?0.5 ______ 0.43 0.38 0.19

a. 0.417b. 0.459c. 0.51

Answer 1 – 50

b. 0.459

Question 2 - 10

Answer 2 – 10

b. 0.8

Question 2 - 20

• The model below can be written as a decimal and a fraction. Which is the correct answer for the shaded part of this model?

a. .65 or 65/100b. .35 or 35/100c. .65 or 65/10

Answer 2 – 20

a. .65 or 65/100

Question 2 - 30

Answer 2 – 30

b. 1.5

Question 2 - 40

Which of the following pictures shows five hundredths?

A. B.

Answer 2 – 40

B

Question 2 - 50

Deidre shaded 2/5 of the circle. Write a decimal number that represents the shaded part of her circle.

a. 0.4b. 0.25c. 0.3

Answer 2 – 50

a. 0.4

Question 3 - 10

Is the number 21 PRIME or COMPOSITE?

WHY?

Answer 3 – 10

Composite1 x 21

3x7

Question 3 - 20

Which group of numbers includes only prime numbers?

a.13,23,43,52b.9,11,13,15c.5,7,23,41

Answer 3 – 20

c. 5,7,23,41

Question 3 - 30

Which lists all the factors of a composite number?

a.1,3,9,27b.1,11c.1,9

Answer 3 – 30

a. 1,3,9,27

Question 3 - 40

True or False: The product of 2 prime numbers is

always a prime number.

Answer 3 – 40

False

Question 3 - 50The factor tree for the number 42 is shown below.

426 7

2 3

According to the factor tree, which of the following statements is true?

a. The numbers 2,3 and 7 are prime numbers.b. The number 21 is prime.

c. The number 7 is composite.

3 – 50

a. 2,3,7 are prime numbers.

Question 4 - 10Looking at the fraction model, which

fraction below is equivalent to the fraction model?

Answer 4 – 10

Question 4 - 20

Answer 4 – 20

Question 4 - 30

Answer 4 – 30

9

Question 4 - 40

If two of the sections of the figure below were not shaded, what fractional part of the figure would you say is shaded?

Answer 4 – 40

Question 4 - 50

Which of the following is NOT true?

a. 2/5 = 6/15b. 6/9 = 2/3c. 5/7 = 30/48

Answer 4 – 50

c. 5/7 = 30/48

Question 5 - 10

Candy went to the store to buy some grocery items. Round the amounts to the nearest dollar. How much did Candy spend?

Milk - $3.59Eggs - $1.79

Bananas - $0.79

Answer 5 – 10

$7.00

Question 5 - 20

Round 6.75 to the tenths place.

Answer 5 – 20

6.8

Question 5 - 30

Tom spent the following on three items at Sportstown. Round each item and total the amount.

Bag of baseballs 14.87

Catcher’s mitt 36.24

Pair of cleats 21.78

Answer 5 – 30

$73.00

Question 5 - 40

Johnny bought a cordless phone on sale for $15.99. The regular price of the phone was $20.00. What is the best estimate of the amount of money that Johnny saved by buying the phone on sale?

Answer 5 – 40

$4.00

Question 5 - 50

Jackie went to the store. She bought some chocolate milk for $1.49, a pack of gum for $0.99, and a candy bar for $0.59. To the nearest dollar, what is the best estimate of how much Jackie spent?

a. $3.00b. $4.00c. $5.00

Answer 5 – 50

$3.00