NJSLA Number Sense and Operations 3

Question 1

What is the product of -4 and -7?

Accepted Answer

28

Answer

The product of two negative numbers is positive: -4 × -7 = 28.

Question 2

Express 0.006 as a fraction in simplest form.

Accepted Answer

3/500

Answer

0.006 = 6/1000, which simplifies by dividing numerator and denominator by 2 to get 3/500.

Question 3

Which of the following is an irrational number?

Accepted Answer

√2

Answer

√2 ≈ 1.41421… is non-terminating and non-repeating, making it irrational; the others equal integers.

Question 4

What is 2/3 ÷ 4/9?

Accepted Answer

3/2

Answer

Dividing fractions: 2/3 × 9/4 = 18/12 = 3/2.

Question 5

A store offers 30% off a $60 item. What is the sale price?

Accepted Answer

$42

Answer

30% of $60 = $18 discount; $60 - $18 = $42 sale price.

NJSLA Exam Practice Test