Change the Order
What is 4 x 2 x 5?
40
What is (2 × 5) × 3?
(2 × 5) × 3
10 x 3
30
Is 2 × 4 × 5 equal to 5 × 2 × 4?
Yes. Both equal 40
6 × 2 = 2 × ___
6
Tori and Winston have 3 bags with 4 apples in each bag. How many apples are there?
12 apples
Fill in the blank: 3 × 7 = 7 × ___
3
Fill in the blank: (4 × 3) × 2 = 4 × (___ × 2)
3
(4 × 3) × 2 = 4 × (__3_ × 2)
Is 3 × 6 × 2 equal to 3 × (6 + 2)?
No. 36 is not equal to 24.
3 × (___ × 2) = 3 × 10
5
Talon and Frederick have 4 boxes of crayons. Each box has 3 packs with 5 crayons in each pack. How many crayons are there?
60 crayons
Rewrite 6 × 2 × 4 by changing the order of the factors.
4 x 6 x 2 OR 2 x 4 x6
Which grouping is easier to solve: (5 × 2) × 7 or 5 × (2 × 7)?
(5 × 2) × 7, because 10 × 7 = 70
Is (7 × 2) × 3 equal to 7 × (2 × 3)?
Yes. Both equal 42.
(4 × 5) × 2 = 4 × (5 × ___)
2
Shannon, Camilla, and Violetta run 3 miles a day for 4 days each week. How many miles do they travel in 2 weeks?
24 miles
Which two expressions have the same product?
A. 3 × 5 × 2
B. 5 × 2 × 4
C. 2 × 3 × 5
A and C
Use parentheses to group 4 × 5 × 3. Find the product.
(4 × 5) × 3 = 60
Which expressions equal 48? Choose all that apply.
A. 4 × 3 × 4
B. 6 × (4 + 2)
C. (2 × 4) × 6
D. 8 × 3 × 2
A, C, and D
7 × (2 × 5) = 7 × __
10
Jefferson Academy has 6 classrooms. Each classroom has 4 tables with 3 students at each table. How many students are there?
72 students
True or False: 8 × 3 × 2 and 2 × 8 × 3 have the same product. Explain.
True. Both equal 48. Changing the order of factors does not change the product
Rewrite 3 × 8 × 5 by changing the order and using parentheses to make it easier to solve.
8 × (3 × 5) =
8 × 15 = 120
Is 2 × (5 × 4) equal to (2 × 5) + 4? Explain.
No. The first expression equals 40, and the second equals 14.
(___ × 4) × 5 = 3 × (4 × 5)
3
Etta buys 5 bags of tennis balls. Each bag contains 4 cans, and each can holds 3 balls. Show how to group the factors and find the total.
(5x4) x3 = 60 tennis balls