Math 6 Lab Week 3 Semester 2

Estimating

100

Estimate the sum of  1/8 + 5/8

0 + 1/2 = 1/2

200

Estimate the difference of  15/16 - 1/10

1 - 0 = 1

300

Estimate the sum of 7 2/3 + 4 3/4

8 + 5 = 13

400

Estimate the difference of 15 3/4 - 9/10

16-1 = 15

500

Estimate the sum of 9/10 + 1/6 + 3/8

1 + 0 + 1/2 = 1 1/2

Add Fractions

100

Add 1/8 + 3/8

4/8 = 1/2

200

Add 7/9 + 1/2

1 5/18

300

Add 3/10 + 1/6

7/15

400

Add  3/8 + 5/24

7/12

500

Add 1/4 + 1/3 + 1/2

1 1/12

Add Mixed Numbers

100

When adding mixed numbers, should you add the fractions or the whole numbers first?

Add the fractions first.

200

Add 17 + 9 3/16

26 3/16

300

Add 1 5/6 + 2 1/3

4 1/6

400

Add 16 1/8 + 7 7/8

24

500

Add 6 2/3 + 7 2/5

14 1/15

Subtract Fractions

100

Subtract 3/4 - 5/8

1/8

200

Subtract 7/8 - 4/5

3/40

300

Subtract 4/11 - 8/22

0

400

Subtract 1/2 - 2/5

1/10

500

Subtract 3/8 - 1/10

11/40

Challenge

100

Find p when p - 5/6 = 3/8

p = 3/8 + 5/6 = 1 5/24

200

Find g when g - 1 1/4 = 3/4

g = 3/4 + 1 1/4 = 2

300

Find r when 2/3 = r - 1/3

2/3 + 1/3 = r

1 = r

400

z - 1/9 = 1/18

z = 1/9 + 1/18 = 1/6

500

find y when y - 1/6 = 1/6

y = 1/6 + 1/6 = 1/3