O.A. 1 Multiplicative Comparison Review
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by Kara DeMasi
| 5 Questions
Note from the author:
OA 1 Review
Watch the following videos to understand multiplicative comparisons. Make sure you are working through the problems in your notebook. When you are ready, answer the multiple choice questions below.
https://www.khanacademy.org/math/4th-engage-ny/engage-4th-module-3/4th-module-3-topic-a/v/multiplication-and-division-word-problems-2
https://www.youtube.com/watch?v=NEkRjZJGvnI
https://learnzillion.com/lesson_plans/988/
1
1
Sabina spends 10 minutes jumping rope at the gym. She spends twice as much time running. Which equation can be used to find how many minutes Sabina spends running?
A 10 × 2 = □
B 10 + 2 = □
C 10 + 2 = 2 × □
D 10 + 10 = 2 × □
2
1
Which of the following best describes the equation 7 × 6 = 42?
A 7 is 6 more than 42.
B 42 is 6 more than 7.
C 7 is 6 times as much as 42.
D 42 is 6 times as much as 7.
3
1
Hannah and Maddie were making bracelets. Hannah made 3 times as many bracelets as Maddie. If Maddie made 6 bracelets, which equation shows how many bracelets Hannah made?
A 6 ÷ 3 = 2
B 6 − 3 = 3
C
D 6 × 3 = 18
4
1
Which situation is represented by the equation 21 × 3 = ______?
A Paul has 21 cards. Ann has 3 more cards than Paul. How many cards does Ann have?
B Paul has 21 cards. Ann has 3 more cards than Paul. How many cards do they have together?
C Paul has 21 cards. Ann has 3 times as many cards as Paul. How many cards do they have together?
D Paul has 21 cards. Ann has 3 times as many cards as Paul. How many cards does Ann have?
5
1
Which of the following comparisons best represents the equation 27 = 3 × 9?
A 27 is 9 times as many as 3
B 9 is 27 times as many as 3
C 9 is 3 times as many as 27
D 3 is 9 times as many as 27
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