Multiplication
What is 3,200 × 4?
12,800
What is 2,400 ÷ 8?
300
Question:
What is:
8 + 4 × 5
28
Question:
Solve:
72 − 6 × (8 − 3) + 4
Be prepared to explain which operation you did first and why.
100: A — (18 + 12) × 2
Question:
A school is ordering supplies for 16 classrooms. Each classroom needs 24 packs of paper, and each pack contains 500 sheets.
Write an expression using multiplication to find the total number of sheets of paper needed.
5,600
Question:
What is 3,200 × 4?
44,835
What is 2,400 ÷ 8?
90
What is:
36 − 6 × 4
12
Question:
Mia has 18 stickers. Noah has 12 stickers. Noah gets the same number of stickers as Mia and Ava combined.
Which expression represents the total number of stickers all three students have?
A. (18 + 12) × 2
B. 18 + 12 × 2
C. (18 + 12) + 18
D. 18 × 12 + 2
2,400 ÷ 30 = 80 seats per row
A student says:
“Since 7 × 8 = 56, then 700 × 8 must equal 5,600.”
Do you agree? Explain.
no,
Multiplication comes before addition:
45 + (6 × 3)
= 45 + 18
= 63
Question:
Solve:
4,328 × 26
112,528
3,276 ÷ 42
3,276 ÷ 42 = 78
Question:
What is:
(54 − 18) ÷ 6 × 5
30
Question:
A farmer has 48 crates. Each crate contains 25 apples. He sells all the apples equally to 6 stores.
Write an expression that represents how many apples each store receives.
200 apples per store
Question:
Which expression has the same value as 4,800 ÷ 60?
A. 480 ÷ 6
B. 48 ÷ 6
C. 4,800 ÷ 6
D. 480 ÷ 60
A. 480 / 6 =80
Question:
A school orders 125 notebooks for each of its 24 classrooms.
How many notebooks does the school order altogether?
112,528
A bakery made 5,184 cookies and packed them equally into 36 boxes.
How many cookies went into each box?
144 cookies per box
Question:
What is:
48 ÷ (3 + 5) × 6
36
Question:
A farmer has 48 crates. Each crate contains 25 apples. He sells all the apples equally to 6 stores.
Write an expression that represents how many apples each store receives.
48 students per team
Question:
A student solves:
(64 − 28) ÷ 4 × 3
and gets 3.
Find the student's mistake and give the correct answer.
The student likely divided by 4 and then multiplied incorrectly. Multiplication and division are done left to right:
(64 − 28) ÷ 4 × 3
= 36 ÷ 4 × 3
= 9 × 3
= 27
A factory makes 2,408 toys each day. It operates for 35 days.
How many toys does the factory make altogether?
125 × 24 = 3,000 notebooks
Question:
A school has 7,425 pencils to distribute equally among 25 classrooms.
How many pencils does each classroom receive?
7,425 ÷ 25 = 297 pencils per classroom
Question:
Solve:
72 − 6 × (8 − 3) + 4
Be prepared to explain which operation you did first and why.
46
A camp has 18 groups with 24 students in each group. The students are divided equally into 9 activity teams.
Write an expression to represent the number of students on each activity team. Then solve.
192,000 Sheets
Question:
A student calculates the cost of 1,248 tickets at $25 each.
They write:
1,248 × 25 = $31,200
Another student says the answer should be $3,120.
Who is correct? Explain how you can use estimation to determine whether the answer makes sense.
$31,200 is correct.
Estimate:
1,248 ≈ 1,200
25 × 1,200 = 30,000
So an answer around $30,000 makes sense. $3,120 is much too small.