Was Libby's answer 25 correct?

No, it's INCORRECT because she multiplied 5 x 3 and 5 x 2. She should have multiplied like this: (5 x 2) x 3 to get the answer 30.

Yes, it's CORRECT because 10 + 15 = 25.

Yes, it's CORRECT because 2 + 3 = 5 and 5 x 5 = 25.

No, it's INCORRECT because she should have multiplied 10 x 15, which would have given her the answer 150.

27 ÷ 3 = B 27\ \div\ 3\ =\ B 2 7 ÷ 3 = B The value of B in the equation above is the same as in which equation below?

B × 3 = 27 B\times\ 3\ =\ 27 B × 3 = 2 7

27 × B = 3 27\ \times\ B\ =\ 3 2 7 × B = 3

B = 3 × 27 B\ =3\ \times\ 27 B = 3 × 2 7

3 × 27 = B 3\ \times\ 27\ =\ B 3 × 2 7 = B

48 ÷ 6 = B 48\ \div\ 6\ =\ B 4 8 ÷ 6 = B The value of B in the equation above is the same as in which equation below?

6 × B = 48 6\times\ B\ =\ 48 6 × B = 4 8

48 × B = 6 48\ \times\ B\ =\ 6 4 8 × B = 6

B ÷ 6 = 48 B\ \div\ 6\ =\ 48 B ÷ 6 = 4 8

B ÷ 48 = 6 B\ \div\ 48\ =\ 6 B ÷ 4 8 = 6

Operations and Algebraic Thinking 3rd Grade

Authored by Matthew Holland

Mathematics

3rd Grade

CCSS covered

Used 35+ times

Operations and Algebraic Thinking 3rd Grade

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Tags

CCSS.6.EE.B.8

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Tags

CCSS.HSF.BF.A.2

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Tags

CCSS.7.EE.B.4B

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Choose the 2 correct numbers below.

Tags

CCSS.HSF.BF.A.2

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Choose 2 correct answers.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

12 blocks in all

6 blocks in all

18 blocks in all

27 blocks in all

Tags

CCSS.3.OA.C.7

CCSS.3.OA.B.5

CCSS.3.OA.A.1

CCSS.3.OA.A.3

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