IAR Test 3rd Grade Math #2

Question 1

Tina cut little rectangles out of a large piece of plastic cover. The area of each little rectangle is the same. Each small rectangle is 1/8 the size of the giant rectangle. Tina cut the large piece of material into how many small rectangles?

Accepted Answer

8

Answer

If each small rectangle is 1/8 the size of the giant rectangle, it means that the giant rectangle can be perfectly divided into 8 equal parts. Each of these parts represents one of the small rectangles. Therefore, Tina cut the large piece of material into 8 small rectangles.

Question 2

Mr. Kevin bought 5 Liters of gasoline and poured haf of it into his motorcycle tank. How much gasoline was left?

Accepted Answer

2.5L

Answer

Mr. Kevin started with 5 liters of gasoline. He then poured 'half of it' into his motorcycle tank. To find half of 5 liters, you perform the calculation 5 ÷ 2. This results in 2.5 liters, which is the amount of gasoline left.

Question 3

The expression below was written by Crissa.
(1 x 3) + (3 x 5)

Which of the following is a different method to show Crissa's expression?

Accepted Answer

9x2

Answer

To find a different method to show Crissa's expression, first calculate the value of her expression: (1 x 3) + (3 x 5) = 3 + 15 = 18. Next, evaluate each answer choice to see which one also equals 18. Option C, 9x2, correctly equals 18, making it an equivalent expression.

Question 4

What is the missing fraction in the number line?

Accepted Answer

4/8

Answer

The number line shows fractions with a common denominator of 8, increasing sequentially. Starting from 0/8, the fractions progress as 1/8, 2/8, 3/8. Following this pattern, the missing fraction must be 4/8, which comes before 5/8.

Question 5

What is 731 rounded to the nearest hundred?

Accepted Answer

700

Answer

To round 731 to the nearest hundred, look at the tens digit. The tens digit is 3. Since 3 is less than 5, we round down, meaning the hundreds digit (7) stays the same, and all digits to its right become zero. Therefore, 731 rounded to the nearest hundred is 700.

IAR Practice Test

IAR Practice Test

IAR Test 3rd Grade Math #2