Download presentation
Presentation is loading. Please wait.
Published byHilda Barker Modified over 8 years ago
1
Multiplying and Dividing Fractions
2
Can you name the parts of a fraction? ? ? numerator denominator
3
What sort of fractions / numbers are these: ? ? ? proper fraction improper fraction mixed number
4
2 × 3 6 3 × 4 12 ==
6
=
8
1.Whole numbers have a denominator of 1. 2.Multiply numerators and denominators. 3.Cancel down and change to a mixed number if necessary.
10
1 1 2 5
11
1 3 7 4 Cancelling before multiplication Which is easier?
12
Multiplying always makes things bigger: 2 x 3 = 6 6 is bigger than both 2 and 3 Is he correct?
14
= = of means ×
15
= ÷ × 1.Turn the dividing fraction upside down and change ÷ to ×. 2.Multiply numerators and denominators. 3.If necessary cancel down and change to a mixed number.
16
= ÷ × = = = = × × × × ÷ ÷ ÷ ÷
17
=
19
1.Whole numbers have a denominator of 1. 2.Turn dividing fraction upside down and multiply numerators and denominators. 3.Cancel down and change to a mixed number if necessary. × ÷
21
Division always makes things smaller. If I divide up a rich, tasty chocolate cake, I always get a smaller piece than the whole cake. 12 ÷ 4=3 3 is less than 12 Is she correct?
23
÷ = 6
24
The end
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.