i-Ready Diagnostic Test Math Concepts and Applications 3

Question 1

A bag contains 4 red marbles, 6 blue marbles, and 2 green marbles. What is the probability of randomly drawing a blue marble?

Accepted Answer

1/2

Answer

There are 6 blue out of 12 total marbles: 6/12 = 1/2.

Question 2

What is 15% of 200?

Accepted Answer

30

Answer

15% of 200 = 0.15 × 200 = 30.

Question 3

If the pattern is 2, 6, 18, 54, ..., what is the next number?

Accepted Answer

162

Answer

Each term is multiplied by 3: 54 × 3 = 162.

Question 4

A recipe calls for 2½ cups of flour. If you want to make 3 batches, how many cups of flour do you need?

Accepted Answer

7½ cups

Answer

2½ × 3 = 5/2 × 3 = 15/2 = 7½ cups.

Question 5

What is the least common multiple (LCM) of 4 and 6?

Accepted Answer

12

Answer

The LCM of 4 and 6 is 12, the smallest number divisible by both.

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