WIAT Mathematical Problem Solving & Computation 4

Question 1

What is the perimeter of an equilateral triangle with a side length of 9 inches?

Accepted Answer

27 inches

Answer

An equilateral triangle has 3 equal sides, so perimeter = 3 × 9 = 27 inches.

Question 2

Evaluate: 3 + 6 × 2 − 4 ÷ 2.

Accepted Answer

13

Answer

Using order of operations: 3 + 12 − 2 = 13.

Question 3

A bag contains 5 red, 3 blue, and 2 green marbles. If one marble is picked at random, what is the probability it is NOT red?

Accepted Answer

1/2

Answer

There are 5 non-red marbles out of 10 total, so P(not red) = 5/10 = 1/2.

Question 4

Which expression is equivalent to 4x + 8?

Accepted Answer

4(x + 2)

Answer

Factoring 4x + 8 by pulling out 4 gives 4(x + 2).

Question 5

A 6-foot ladder leans against a wall. The base is 3 feet from the wall. Using the Pythagorean theorem, how high up the wall does the ladder reach (to the nearest tenth)?

Accepted Answer

5.2 feet

Answer

h² = 6² − 3² = 36 − 9 = 27, so h = √27 ≈ 5.2 feet.

(WIAT) Wechsler Individual Achievement Test Practice Test

(WIAT) Wechsler Individual Achievement Test Practice Test

WIAT Mathematical Problem Solving & Computation 4