3rd Grade SC Ready Practice Questions

Which figure has an area of 12 square units? Mark all that apply.

• Figure A

• Figure B

• Figure C

• None of the above

Answer explanation

Figure A and Figure C both have an area of 12 square units, which you can solve for by counting the squares inside the figure. You can also find area by multiplying the number of squares on side by the number of squares on the top. For Figure A, that would be 3 x 4. For Figure C, it is 2 x 6. Figure B has an area of 4 x 4 = 8 square units.

Which figure has an area of 9 square units? Mark all that apply.

• Figure A

• Figure B

• Figure C

• None of the above

Answer explanation

Figure B and Figure C both have an area of 9 square units, which you can calculate by counting the number of squares that fit inside the figure.

The Washingtons built a dog run in their backyard. Part of the dog run is covered to give the dogs shade. Mr. Washington drew a picture to show the area of the dog run. What is the total area of the dog run?

• 28 square feet

• 36 square feet

• 48 square feet

• 72 square feet

Answer explanation

To find the total area of the dog run, we can multiply the side lengths, 6 feet by 8 feet, the area is 6 x 8 = 48 square feet. You can also break the dog run up into two smaller rectangles, 6 X 6 and 6 X 2. When you solve for these partial products, you get 36 and 12. When you add 36 + 12, you get the combined area of 48 square feet. Therefore, the correct answer is 48 square feet.

Michael and Jae'Shaun are studying multiplication and division fact families. Jae'Shaun says he can make four different equations using the numbers 5, 8, and 40. What are the four related equations Brian can make?

• 5 × 8 = 40

  8 × 5 = 40

  40 ÷ 5 = 8

  40 ÷ 8 = 5

• 5 × 8 = 40

  5 × 5 = 25

  40 ÷ 5 = 8

  40 ÷ 8 = 5

• 5 × 8 = 40

  8 × 8 = 64

  40 ÷ 5 = 8

  40 ÷ 8 = 5

• 5 × 8 = 40

  8 × 5 = 40

  40 ÷ 5 = 5

  40 ÷ 8 = 8

Answer explanation

The correct multiplication equations are 5 × 8 = 40 and 8 × 5 = 40. These two equations show that the smaller factors multiply to get the larger product.

The correct division equations are 40 ÷ 5 = 8 and 40 ÷ 8 = 5. To divide, you must start with the product of the multiplication equations, 40, and divide it by either of the factors, 5 or 8. The quotient (answer) will be the other factor, 8 or 5.

Michael and Jae'Shaun are studying multiplication and division fact families. Michael says some fact families only have one multiplication and one division equation. Write two related equations Michael can make to show that some fact families have only one multiplication and one division equation?

• 5 × 8 = 40

  40 ÷ 8 = 5

• 5 × 5 = 25

  25 ÷ 5 = 5

• 8 × 7 = 56

  56 ÷ 8 = 7

• 5 × 9 = 45

  45 ÷ 5 = 9

Answer explanation

The correct choice is 5 × 5 = 25 and 25 ÷ 5 = 5. This shows a fact family with one multiplication and one division equation because the factors of 5 are the same number, demonstrating that not all fact families have multiple equations.

Which pairs of figures show equivalent fractions?

• Pair A

• Pair B

• Pair C

• Pair D

Answer explanation

Pair A shows equivalent fractions because both fractions, 4/8 and 3/6, represent 1/2 of the figure.

Pair B shows 2/8 (or 1/4) and 2/6 (or 1/3). Pair C shows 6/8 (or 3/4) and 4/6 (or 2/3). Neither of these pairs have equivalent fractions.

The figure shown below is divided into equal parts. What fraction of the whole figure does each part represent?

• 1/6

• 1/8

• 8/1

• 6/1

• 1/4

Answer explanation

The figure is divided into 6 equal parts. Each part represents 1 out of the total 6 parts, which is expressed as the fraction 1/6. Therefore, the correct answer is 1/6.

Zymir has 558 pennies. Morgan and her brother each have 386 pennies. How many more pennies do Morgan and her brother have altogether than Zymir?

• 172

• 214

• 224

• 365

Answer explanation

Morgan and her brother have a total of 386 + 386 = 772 pennies. Zymir has 558 pennies. The difference is found by subtracting, 772 - 558 = 214. Therefore, Morgan and her brother have 214 more pennies than Zymir.

Ava and her friends are coloring flags using gray and white designs. This picture shows Ava's flag. What fraction represents the part of Allison's flag that is gray?

• 4/9

• 4/8

• 4/4

• 4/2

Answer explanation

Allison's flag has a total of 8 parts, with 4 of them being gray. Therefore, the fraction representing the gray part is 4/8.

Ava and her friends are coloring flags using gray and white designs. London wants her flag to be 2/3 gray. How many more parts does she need to color gray?

• 2

• 3

• 4

• 6

Answer explanation

London wants her flag to be 2/3 gray. You can see that the flag is divided into three rows. If 2 of those 3 rows were shaded gray, 8 squares would be colored. This means that 8/12 is equivalent to 2/3. Since six squares are already colored gray, London needs to color 2 more to make a total of 8 squares. Therefore, she needs 2 more parts colored gray.