4 3/4 ➗ 9 (2/5) (5/6) - 3- (3/4)
Answers
Answer:
Step 1. Turn the second fraction upside down (it becomes a reciprocal):
16 becomes 61
Step 2. Multiply the first fraction by that reciprocal:
(multiply tops ...)
12 × 61 = 1 × 62 × 1 = 62
(... multiply bottoms)
Step 3. Simplify the fraction:
62 = 3
With Pen and Paper
And here is how to do it with a pen and paper (press the play button):
To help you remember:
♫ "Dividing fractions, as easy as pie,
Flip the second fraction, then multiply.
And don't forget to simplify,
Before it's time to say goodbye" ♫
Another way to remember is:
"leave me, change me, turn me over"
leave change turn
How Many?
20 divided by 5 is asking "how many 5s in 20?" (=4) and so:
12 ÷ 16 is really asking:
how many 16s in 12 ?
Now look at the pizzas below ... how many "1/6th slices" fit into a "1/2 slice"?
How many 1/6 in 3/6 ? Answer: 3
So now you can see why 12 ÷ 16 = 3
In other words "I have half a pizza, if I divide it into one-sixth slices, how many slices is that?"