Grade 4 Chapter 7 and 8

Vocabulary

100

What does GCF stand for?

Greatest Common Factor

200

What does LCM stand for?

Least Common Multiple

300

For 36:
1x36, 2x18, 3x12, 4x9 and 6x6 are called the ______  ______.

Factor Pairs

400

**DD**
When fractions are equal  they are called:

Equivalent Fractions

500

When a fraction's numerator and denominator only share a factor of 1.

Simplest Form

Wonderful Word Problems

100

T. Joey's pizza has 8 slices.  He ate 2 of them.  What fraction of the pizza did he eat?

2/8

200

T. Joey has 15 balls. 3 of them are green.  What fraction of the balls are not green?

12/15

300

**DD**
T. Joey has 18 balls. 3 of them are green.  In simplest form what fraction of the balls are not green?

5/6

400

T. Joey and two of his friends each bought a coke and hamburger.  A coke is 30 baht and a hamburger is 70 baht.  How much money did they spend altogether?

300 baht

500

Jom has 12 games he wants to play. 3 of them are broken and 5 of them are lost.  In simplest form, write a fraction of the games that Jom is able to play.

1/3

PEMDAS

100

16-3+4=

17

200

(5x3+2-1) -3

13

300

3+(16/2 +3) =

14

400

12 - (a x 3) =b

a=3   b= ?

3

500

(e x 8) - 4 =f

e=4    f=?

28

Potpuri

100

What numbers are neither prime nor composite?

0 and 1

200

**DD**
Find the GCF of  6, 9 and 15

3

300

Is 24 prime, composite, or neither?

composite

400

Is 245 a multiple of 5?

yes

500

Find the LCM of 24, 8 and 12

24

Fantastic Fractions

100

What is 3/12 in simplest form?

1/4

200

Find 2 equivalent fractions for 12/24

various answers

300

Write "Two and two-thirds" as an improper fraction.

8/3

400

Write 23/6 as a mixed number.

3 and 5/6

500

Put the following fractions in order from greatest to least:

3/9,   8/16,   89/90,   45/3

45/3,    89/90,     8/16,    3/9