Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.
Which array matches this multiplication sentence?
4 \({ \times }\) 5 = 20
Try again. This array has only 2 columns.
No. This array has only 3 columns.
Correct. This array has 4 rows and 5 columns.
Try again. This array has only 4 columns.
Which multiplication sentence matches this array?
- 7 \({ \times }\) 4 = 28
- 6 \({ \times }\) 4 = 24
- 4 \({ \times }\) 7 = 28
- 4 \({ \times }\) 6 = 24
Try again. The first factor tells you how many rows are in an array.
Try again. This array does not have 4 rows and 6 columns.
Correct! The first factor tells you how many rows are in an array.
Try again. This array does not have 4 rows and 6 columns.
Which multiplication sentence matches this array?
- 6 \({ \times }\) 4 = 24
- 3 \({ \times }\) 8 = 24
- 4 \({ \times }\) 6 = 24
- 8 \({ \times }\) 3 = 24
Correct! The first factor tells you how many rows are in an array.
Try again. There are not 3 rows and 8 columns in this array.
Try again. The first factor tells you how many rows are in an array.
Sorry. There are not 8 rows and 3 columns in this array.
How many rows does an array need to solve this multiplication sentence?
6 \({ \times }\) 7 = 42
- 7
- 5
- 8
- 6
Try again. The second factor tells you how many columns should be in an array.
Try again. 5 is not a factor in this equation.
No. 8 is not a factor in this equation.
Correct. The first factor in a multiplication sentence tells you how many rows should be in an array.
How many columns, or shapes in each row, should an array have to represent this division sentence?
72 \({ \div }\) 9 = 8
- 72
- 8
- 9
- 11
Try again. 72 is the dividend. It tells you the total number of items in an array.
Good job. The quotient, or answer in a division sentence, tells you how many columns are in an array.
Sorry. The divisor tells you how many rows are in an array.
No. 11 is not a number in this division sentence.
How many columns, or shapes in each row, should an array have to represent this division sentence?
48 \({ \div }\) 8 = 6
- 14
- 8
- 6
- 48
Try again. 14 is not a number in this division sentence.
Sorry. The divisor tells you how many rows are in an array.
Good job. The quotient, or answer in a division sentence, tells you how many columns are in an array.
Try again. 48 is the dividend. It tells you the total number of items in an array.
How many rows does an array need to solve these math sentences?
2 \({ \times }\) 9 = 18
18 \({ \div }\) 2 = 9
- 18
- 2
- 9
- 11
Try again. 18 is the dividend. It tells you the total number of items in an array.
Correct. The divisor in a division sentence tells you how many rows should be in an array.
Try again. The quotient, or answer in a division sentence, tells you how many columns are in an array.
No. 11 is not a factor or divisor in these sentences.
How many columns does an array need to solve these math sentences?
8 \({ \times }\) 6 = 48
48 \({ \div }\) 8 = 6
- 8
- 6
- 2
- 48
Try again. The divisor in a division sentence tells you how many rows should be in an array.
Correct. The quotient, or answer in a division sentence, tells you how many columns are in an array.
Try again. 2 is not a number in this division sentence.
Try again. 48 is the dividend. It tells you the total number of items in an array.
Use counters to help solve the problem.
Zoe found 3 groups of 7 gold bars in a treasure chest. How many gold bars did she find in all?
- 10
- 28
- 21
- 14
Try again. There are 7 gold bars in each of the 3 groups.
Sorry. This does not equal 3 groups of 7 gold bars.
Great! There are 3 groups of 7 gold bars.
Try again. This does not equal 3 groups of 7 gold bars.
Use counters to help solve the problem.
Caleb saw 15 ruby bracelets in 3 different treasure chests. How many ruby bracelets were in each treasure chest?
- 18
- 6
- 12
- 5
Try again. Use 15 counters and put them into three groups.
Try again. Use 15 counters and put them into three groups.
Try again. Use 15 counters and put them into three groups.
Correct. Each treasure chest had 5 ruby bracelets.
Summary
Questions answered correctly:
Questions answered incorrectly: