Fractions

Adding Fractions

100

Adding unlike fractions:

1/2 + 7/12

13/12

200

Adding unlike fractions:

7/9 + 3/30

79/90

300

Adding fractions & mixed numbers:

8/10 + 4 2/5

26/5 or 5 1//5

400

Add mixed numbers:

5 4/5 + 6 2/3

187/15 or 12 7/15

500

Adding mixed numbers:

6 7/9 + 3 8/30

452/45 or 10 2/45

Subtracting Fractions

100

Subtract unlike fractions:

5/9 - 2/4

1/18

200

Subtract unlike fractions:

9/24 - 1/5

7/40

300

Subtract unlike fractions:

12/4 - 4/12

32/12

400

Subtract mixed numbers:

7 1/4 - 4 1/2

11/4 or 2 3/4

500

Subtracting mixed numbers:

7 9/16 - 3 7/8

59/16 or 3 11/16

Adding Integers

100

-14 + (-4)

-18

200

21 + 8

29

300

-13 + 1

-12

400

-15 + -15

-30

500

23 - 8

15

Multiplying Integers

100

-4 x -3

12

200

9 x 4

36

300

-5 x 6

-30

400

-12 x 11

-132

500

-8 x -11

88

All

100

KCF

-9 - (4)

-13

200

KCF 

12 - (-13)

25

300

7 x (-2)

-14

400

What is the LCF of 3 and 2?

6

500

What multiples do 9 and 12 have in common?

1, 3