ISASP Mathematics 4

Question 1

Which inequality is represented by the sentence 'a number n is at least 12'?

Accepted Answer

n ≥ 12

Answer

'At least 12' means n can equal 12 or be greater, so n ≥ 12.

Question 2

The table below shows a linear pattern: x = 1 → y = 5, x = 2 → y = 8, x = 3 → y = 11. What is y when x = 7?

Accepted Answer

23

Answer

The pattern increases by 3 each time: y = 3x + 2; when x = 7, y = 21 + 2 = 23.

Question 3

What is the greatest common factor (GCF) of 36 and 48?

Accepted Answer

12

Answer

Factors of 36: 1,2,3,4,6,9,12,18,36; factors of 48: 1,2,3,4,6,8,12,16,24,48; GCF = 12.

Question 4

A data set has values 4, 7, 7, 9, 13. What is the mean?

Accepted Answer

8

Answer

Mean = (4 + 7 + 7 + 9 + 13) ÷ 5 = 40 ÷ 5 = 8.

Question 5

Which of the following is the correct order from least to greatest? 2/3, 0.6, 5/8

Accepted Answer

5/8, 0.6, 2/3

Answer

5/8 = 0.625, 0.6 = 0.600, 2/3 ≈ 0.667; order: 0.600 < 0.625 < 0.667.

ISASP - Iowa Statewide Assessment of Student Progress Practice Test