Multiplicative Comparisons
Write the multiplication comparison sentence as an equation.
15 is 3 times as many as 5
15 = 3 X 5
Joe has 7 apples. Jill has 5 times as many apples as Joe. How many apples does Jill have?
Jill has 35 apples.
What is 5 X 400?
2,000
Round 316 to the nearest hundred, then estimate 6×316.
316 rounds to 300
about 1,800
Break 16 into tens and ones. What is 8×16?
8 X 16 = 128
Write the equation as a comparison sentence.
8 X 7 = 56
8 times as many as 7 is 56.
Sarah has 12 pencils in her desk. Isabella has 4 times as many pencils in her desk than Sarah does. How many pencils does Isabella have?
Isabella has 48 pencils.
What is 8 X 7,000?
56,000
Round 703 to the nearest hundred, then estimate 4×703.
703 rounds to 700
about 2,800
Break 14 into tens and ones. What is 6×14?
6 X 14 = 84
Find the missing part of the sentence than write the equation.
64 is 8 times as many as n.
n=8
64 = 8 X 8
There are 42 chocolate milks. This is 6 times the number of strawberry milks sold. How many strawberry milks were sold?
7 strawberry milks were sold.
Find the missing factor: 8 X ___ = 7,200.
900
Estimate 5×35 by rounding 35 to the nearest ten.
about 200
Use the distributive property to find 5×342.
5 X 342 = 1,710
Make the following sentence true.
*there is more than 1 correct answer.
____ times as many as _____ is 24.
Possible answers:
4 X 6 = 24 or 6 X 4 = 24
8 X 3 = 24 or 3 x 8 = 24
12 X 2 = 24 or 2 X 12 = 24
1 X 24 = 24 or 24 X 1 = 24
An adult giraffe weighs 2,400 pounds, or 8 times as much as a baby giraffe. How much does the baby giraffe weigh?
A baby giraffe weighs 3,000 pounds.
Find the missing factor: 6 X ____ = 30,000.
5,000
Find two estimations that the exact answer to 3×558 is between.
1,500 and 1,800
Use the distributive property to find 9×945.
9 X 945 = 8,505
Draw a model and write an equation for the following sentence.
45 is 5 times as many as 9.
Teacher will check models
45 = 5 X 9
At the zoo, there were 3 times as many monkeys as lions. Tom counted a total of 11 lions. How many monkeys wee there?
There were 33 monkeys.
What is 60 X 8,000?
480,000
Find two estimations that the exact answer to 8×361 is between.
2,400 and 3,200
Explain how breaking 16 into 10 and 6 helps you find 8×16. Then give the product.
Breaking 16 into 10 and 6 helps because it makes the numbers easier to multiply.
8 X 16 = 128