Pages

Thursday, 15 September 2016

More adding fractions. 16916

Name:     Vedel                                                   Date:16916

WALT add fractions with different denominators


EXAMPLE:
    ½  +  ⅔
=   ½ x 3/3  + ⅔ x 2/2
=   3/6  +  4/6
=  7/6
=1 ⅙  

Your work (Show all working - as in the example)

1. ⅓  +  ¾
= ⅓ x 4/4 + ¾ x 3/3
= 4/12 + 9/12
= 13/12
= 1 1/12  

2. ⅖  +  ⅙
= ⅖ x 6/6 + ⅙ x 5/5
= 12/30 + 5/30
= 17/30

3. ⅗  +  2/7
=  ⅗ x 7/7 + 2/7 x 5/5
= 21/35 + 10/35
= 31/35

4. ¾  +  ⅙  
= ¾ x 6/6 + ⅙ x 4/4
= 18/24 + 4/24
= 22/24
= 11/12  

5. ⅜  +  ⅓  
= ⅜ x 3/3 + ⅓ x 8/8
= 9/24 + 8/24
= 17/24

6. 3/6  +  ⅔  
= 3/6 x 3/3 + ⅔ + 6/6
= 9/18 + 12/ 18
= 21/18
= 1 3/18

7. ⅝  +  ½
= ⅝ x 2/2 + ½ x 8/8
= 10/16 + 8/16
= 18/16
= 1 2/16

8. 2/9  +  1/10
= 2/9 x 10/10 + 1/10 x 9/9
= 20/90 + 9/90
= 29/90

9. 6/8  +  3/7
= 6/8 x 7/7 + 3/7 x 8/8
= 42/56 + 24/56
= 66/56
= 1 10/56

10. 2/7 +  3/10
= 2/7 x 10/10 + 3/10 x 7/7
= 20/70 + 21/70
= 41/70



0 comments:

Post a Comment