Groups of
There are 4 groups of 3 stars. How many stars are there altogether?
12 stars
4 × 3 = 12
There are 6 bags. Each bag contains 4 apples.
How many apples are there altogether?
A. 10
B. 20
C. 24
D. 28
C. 24
What is:
6 × 4 = ?
24
There are 24 crayons. Each box holds 6 crayons.
Which operation should you use?
A. Addition
B. Subtraction
C. Multiplication
D. Division
Be ready to explain why.
D. Division
What is:
176 − 24 = ?
152
Look at the equation: 5 × 7 = 35
What does the 5 represent?
A. The total number of objects
B. The number of groups
C. The number of objects left over
D. The number of objects in all groups
B. The number of groups
A teacher has 32 pencils. She puts the same number of pencils into 4 containers.
How many pencils are in each container?
A. 6
B. 7
C. 8
D. 9
C. 8
What is:
7 × 8 = ?
56
There are 5 shelves. Each shelf has 7 books.
Which operation should you use to find the total number of books?
A. Addition
B. Subtraction
C. Multiplication
D. Division
Be ready to explain why.
C. Multiplication
What is:
143 − 58 = ?
85
A student draws 3 rows with 8 stars in each row.
Which multiplication equation represents the drawing?
A. 3 × 8 = 24
B. 8 × 8 = 64
C. 3 + 8 = 11
D. 24 ÷ 3 = 8
A. 3 × 8 = 24
A school has 7 classrooms. Each classroom has 9 computers.
Which equation can be used to find the total number of computers?
A. 7 + 9
B. 9 − 7
C. 7 × 9
D. 9 ÷ 7
C. 7 × 9
What is:
9 × 6 = ?
54
Which situation represents 36 ÷ 4?
A. 36 groups of 4
B. 4 groups of 36
C. 36 objects shared equally among 4 groups
D. 36 objects added to 4 objects
Be ready to explain why.
C. 36 objects shared equally among 4 groups
A school has 325 pencils. Students use 148 pencils.
How many pencils remain?
A. 167
B. 177
C. 187
D. 473
B. 177
Which equation shows the Commutative (pbj) Property of Multiplication?
A. 6 × 4 = 24
B. 6 × 4 = 4 × 6
C. 6 + 4 = 10
D. 24 ÷ 6 = 4
B. 6 × 4 = 4 × 6
There are 45 students going on a field trip. Each van can hold 5 students.
How many vans are needed?
A. 8
B. 9
C. 10
D. 40
B. 9
A student knows:
5 × 7 = 35
Which equation can help the student find 7 × 5?
A. 35 + 5
B. 35 − 5
C. 5 × 7
D. 7 + 5
C. 5 × 7
A teacher has 48 pencils. She wants to give the same number of pencils to each of 6 groups.
Which equation can be used to find the number of pencils each group will receive?
A. 48 + 6 = 54
B. 48 − 6 = 42
C. 48 × 6 = 288
D. 48 ÷ 6 = 8
D. 48 ÷ 6 = 8
A student says:
503 − 278 = 335
Is the student's answer correct?
No, the student's answer is not correct because
503 − 278 = 225
A student says:
“There are 4 groups of 6, so I can only use 4 × 6.”
Is the student correct? Explain.
No. The students are not correct because the Commutative Property (pbj) means the factors (numbers) can switch places. 4 × 6 and 6 × 4 both equal 24.
4 × 6 = 6 × 4 ; 4 × 6 is the same as 6 × 4
A pet store has 6 tanks. Each tank contains 8 fish. The store sells 15 fish.
Which expression represents the number of fish remaining?
A. 6 × 8 + 15
B. 6 × 8 − 15
C. 15 − 6 × 8
D. 6 + 8 − 15
B. 6 × 8 − 15 = 33
Without multiplying from the beginning, find the missing number:
8 × 6 = 6 × ___
8
Reason: The commutative property (pbj) lets the factors switch places.
A class has 48 markers. The teacher gives 6 markers to each group.
Which question can be answered using 48 ÷ 6?
A. How many markers are there in all?
B. How many markers are left?
C. How many groups can receive markers?
D. How many more markers are needed?
C. How many groups can receive markers?
A library has 750 books.
During the week:
How many books are still in the library?
There are 327 books still in the library.