Scaling
If you multiply 1 1/4 times 3, will the product be larger than 1 1/4 or smaller? Explain.
Larger because any factor times a number greater than 1, will make the product larger than the first factor.
Why is the product of 2/3 times 1/3 smaller than 2/3?
Because 1/3 is less than one so the product will be less than 2/3.
Mrs. Michaud has 2/3 tank of gas in her car. If she uses 1/2 of that gas to drive to a monster truck rally, how much gas will she have left?
1/3 of a tank of gas
4 4/5 x 1/2
2 2/5
What can you multiply 1 and 3/8 by to get a product smaller than 1 and 3/8?
Any amount less than 1. So any proper fraction.
Ms. Inman has 5 pizzas. She's going to give 7/9 of her pizza to Mrs. Parker's class for being awesome. How much of Ms. Inman's pizzas will Mrs. Parker's class get?
We will eat 3 8/9 of Mrs. Inman's pizza.
Will 1 and 2/3 times 4 and 1/4 be larger than 4 or smaller than 4?
8 x 3/8
3
Mrs. P has a large My Little Pony collection. She got out 9/14 of her ponies. She then brushed the hair of 6/9 of those ponies. What fraction of Mrs. P's My Little Ponies have beautifully brushed manes?
3/7
2 2/5 x 1/9
12/ 45 or 4/15
If I multiply a mixed number by a proper fraction, will my answer scale down or up? Explain.
It will scale down because a proper fraction is less than 1.
7 x 1/3
2 1/3
9/13 x 6/10
54/130 = 27/65