Math 4th grade NC check in #3 Review

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Answer explanation

If you rearranged the cubes, you would find that 1 and 4 both have 3/5 shaded.

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

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Answer explanation

15 +9 does equal 24, but when you add your fractional parts 4/5 + 4/5, you get 8/5 which is equivalent to 1 and 3/5. So you add 24 + 1 to give you 25 and 3/5.

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CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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Answer explanation

Let's think about the numbers 5 and 15! Their relationship is 5 X 3 to 15 or 15 divided by 3 to get 5. So we know that 5 is 1/3 of 15. The question asks what will be LEFT. So if 1/3 was eaten, 2/3 is left.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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Answer explanation

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CCSS.7.NS.A.1C

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Answer explanation

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CCSS.5.NBT.B.7

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Answer explanation

Wyatt and Doc are equivalent because 4/8 is equivalent to 1/2 since 4 is half of 8.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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Answer explanation

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CCSS.7.NS.A.1C

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Answer explanation

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CCSS.3.G.A.2

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Answer explanation

Reasonableness! Relating to a number line, could 6 or 8 be between 7 and 8? This means your answer is less than 8 but more than 7 because the arrow is right in the middle. The only reasonable answer is .75 or 75/100 because if you use your zeros rule that is between 70/100 and 80/100 (equivalent to 7/10 and 8/10)

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CCSS.6.NS.C.6C

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Answer explanation

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CCSS.4.NF.B.3C

CCSS.4.NF.B.3D