3rd Grade Two-Step Word Problems and Patterns Quiz: 10 Questions with Explanations

A \(4 + 9 + 5 = n\)B \(4 \times 9 + 5 = n\)C \(4 \times 9 – 5 = n\)D \(4 \times 9 \times 5 = n\)

There are 4 equal parts of 9, and 5 more are added. A common mistake is adding every number.

A 17B 24C 30D 18

3 × 8 = 24, then 24 + 6 = 30. The answer 24 forgets the second step.

A 90B 100C 110D 120

48 rounds to 50, 31 rounds to 30, and 22 rounds to 20. Then 50 + 30 + 20 = 100.

A \(15 + 8\)B \(14 + 22\)C \(9 + 7\)D \(12 + 18\)

15 + 8 = 23, which is odd. The other sums are 36, 16, and 30, and they are all even.

A 43B 42C 44D 51

Each number is 7 more than the one before, so 36 + 7 = 43.

A 36B 71C 11D 6

6 × 5 = 30, and 41 − 30 = 11. Subtracting only 5 from 41 gives 36.

A 14B 22C 18D 24

3 × 6 = 18, and 18 − 4 = 14. The answer 22 adds instead of subtracts.

A Yes, since about 60 + 70 = 130B No, since about 60 + 40 = 90C Yes, since 62 + 38 is more than 100D No, since about 60 + 40 = 100

Rounding gives 60 + 40 = 100. Her answer is far from 100, so it is not reasonable. The exact sum is 100.

A Every shaded number is evenB Every shaded number is oddC Every shaded number ends in 5D Every shaded number ends in 0 or 5

The multiples of 5 end in 5, 0, 5, 0, and so on. Some are odd (5, 15, 25) and some are even (10, 20, 30).

A 9B 12C 18D 51

54 ÷ 6 = 9, and 9 + 3 = 12. The answer 9 stops after the first step.