Select all the numbers that are prime.
(1 point)
Responses
9
9
11
11
19
19
29
29
39
11, 19, 29
Choose Yes or No:
(2 points)
21 is a prime number.
Choose
31 is a prime number.
Choose
51 is a composite number.
Choose
96 is a composite number.
Choose
No - 21 is not a prime number.
Yes - 31 is a prime number.
Yes - 51 is a composite number.
Yes - 96 is a composite number.
Select all the numbers that are composite.
(1 point)
Responses
11
21
31
41
51
21, 51
Roberto has 4 times as many toy cars as John. Roberto has 20 toy cars.
Which equation can you use to find the amount of cars that John has?
(1 point)
Responses
4×20=a
4 × 20 = a
20−4=a
20 - 4 = a
a×4=20
a × 4 = 20
a×20=4
a × 20 = 4
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20 ÷ 4 = a
Roberto has 4 times as many toy cars as John. Roberto has 20 toy cars.
Which equation can you use to find the amount of cars that John has?
(1 point)
Responses
4×20=a
20−4=a
a×4=20
a×20=4
a×4=20
The following question has two parts. First, answer part A. Then, answer part B.
Part A
Martina is trying to find a factor pair for the number 62. She says that because 62 is an even number, then 2 has to be one of the factors in a factor pair.
Do you agree with Martina's reasoning? If you agree, find the missing factor. If you disagree, find another factor pair for 62. In either case, make sure you explain how you use one factor to find the other factor in the pair.
(2 points)