Lesson 1-Multiplicative Comparisons
What equation matches the following statement?
The number 18 is 3 times as many as 6.
18 = 3 x 6
Tell whether the following statement is an additive or multiplicative comparison.
Maria makes a turkey with 5 tail feathers. Bob uses 2 more tail feathers. How many feathers does Bob use?
Additive
The inverse operation of multiplication
Division
Write the equation and solution.
Malachi has 18 cards. That is 3 times as many cards as Jackson has. How many cards does Jackson have?
3 x n = 18
n = 6
Jasalyn has 30 paper clips. Adrianna has 5 times as many paper clips as Jasalyn.
Jasalyn - 30
Adrianna - 30 30 30 30 30
How many paper clips does Adrianna have?
30 x 5 = 150 paper clips
A gallon holds 4 times as much as a quart. A quart is equal to 2 pints. Which expression can be used to find the number of pints in a gallon?
4 x 2
Tell whether the following statement is an additive or multiplicative comparison.
Joe has 5 pieces of candy. Fred has 3 times as many pieces of candy as Joe. How many pieces of candy does Fred have?
Multiplicative
On Friday, Heather did 40 hops while jumping rope. That is 4 times as many hops as she did on Monday. What equation can be used to solve this problem?
40 ➗ 4 = 10
Write the equation and solution.
Kane has 6 cards. Jace has 13 cards. How many more cards does Jace have than Kane?
6 + n = 13
n = 7
A box has 6 times as many pens as markers. The box has 42 pens.
6 x m = 42
How many markers, m, are in the box?
m = 7
Which comparison statement is BEST represented by the equation 5 x 3 = 15?
15 is 3 times greater than 5
Solve the following statement using addition or multiplication. Show your equation.
Winnie has 6 feet of blue yarn and 5 times as many feet of yellow yarn as blue yarn. How many feet of yellow yarn does Winnie have?
6 x 5 = 30 feet of yellow yarn
On Monday, David correctly completed 30 multiplication facts in 1 minute. This is 3 times as many facts as he correctly completed last week.
Which equation can be used to find how many multiplication facts, m, David correctly completed last week?
30 ➗ 3 = m
Write the equation and solution.
Zoe has 17 more cards than Fiona. Fiona has 4 cards. How many cards does Zoe have?
4 + 17 = n
n = 21
Mae has 18 red marbles. That is 3 times as many as the number of yellow marbles she has. She has 10 fewer green marbles than red marbles.
How many green marbles does Mae have?
How many yellow?
(Green) n + 10 = 18
18 - 10 = n
n = 8 green marbles
(Yellow) n x 3 = 18
18 ➗ 3 = n
n = 6 yellow marbles
In a snack pack there are 12 pieces of candy. Carlos has 6 snack packs. Which expression represents the information?
12 x 6
Solve the following statement using addition or multiplication. Show your equation.
Reese has 8 toy cars. Jena has 4 more cars than Reese. How many toy cars does Jena have?
8 + 4 = 12 toy cars
There are 7 times as many cars as there are trucks in a parking lot. If there are 49 cars in the parking lot, how many trucks are there?
49 ➗ 7 = 7 trucks
Karis has 4 cards. Lilly has 5 times as many cards as Karis. How many cards does Lilly have?
4 x 5 = n
n = 20
(Hint: You have to find the total of maps and add it to the number of toys.)
7 x m = 35
m = 5 maps
35 + 5 = 40 toys and maps
Which comparison statement is BEST represented by the equation 4 x 6 = 24?
24 is 6 times greater than 4.
Solve the following statement using addition or multiplication. Show your equation.
Tammy picked 5 white flowers. She picked 4 times as many red flowers. How many red flowers did Tammy pick?
5 x 4 = 20 red flowers
There are 5 times as many birds in a tree as there are squirrels. If there are 15 birds in the tree, how many squirrels are in the tree?
15 ➗ 5 = 3 squirrels
There are 40 students and 5 teachers volunteering at soup kitchen. How many times as many students as adults are volunteering?
~Write your equation and solve the answer.
n x 5 = 40
40 ➗ 5 = n
n = 8
Use the inverse operation to solve the equation;
n x 4 = 32
32 ➗ 4 = 8