Which expression has a product of 180?

Question

Do not use a calculator or multiplication chart!

(1 point)
Responses

3 x 80
3 x 80

60 x 4
60 x 4

3 x 60
3 x 60

40 x 4

Answer 1

To find which expression has a product of 180, let's compute the product of each option:

1. 3 x 80 \[ 3 \times 80 = 240 \]

2. 60 x 4 \[ 60 \times 4 = 240 \]

3. 3 x 60 \[ 3 \times 60 = 180 \]

4. 40 x 4 \[ 40 \times 4 = 160 \]

The expression that has a product of 180 is 3 x 60.

Answer 2

Dion makes 10 puzzles a week for the summer school program that lasts 9 weeks. How many puzzles does he make during the 9 weeks of summer school?

Do not use a calculator or multiplication chart!

(1 point)
Responses

90
90

60
60

40
40

10

Answer 3

To find out how many puzzles Dion makes during the 9 weeks of summer school, we can multiply the number of puzzles he makes each week by the number of weeks:

Dion makes 10 puzzles each week for 9 weeks.

So, we calculate: \[ 10 \times 9 \]

We can break it down: \[ 10 \times 9 = 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 90 \]

Thus, Dion makes 90 puzzles during the 9 weeks of summer school.