Open Up - Grade 6 - Mathematics - Unit 5 - Lesson 2

Use the given key to answer the questions. What number does this diagram represent?

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5.NBT.1

6.NS.3

5.NBT.7

Here are diagrams that represent 0.137 and 0.284. Use the diagram to find the value of 0.137 + 0.284.

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5.NBT.1

6.NS.3

5.NBT.7

Select the vertical calculation where digits of the same kind are lined up. a. 3.25 + 1

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5.NBT.1

6.NS.3

5.NBT.7

Select the vertical calculation where digits of the same kind are lined up. b. 0.5 + 1.15

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5.NBT.1

6.NS.3

5.NBT.7

Find the sum using vertical calculation.10.6 + 1.7 =

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5.NBT.1

6.NS.3

5.NBT.7

Find the sum using vertical calculation.123 + 0.2 =

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5.NBT.1

6.NS.3

5.NBT.7

Andre has been practicing his math facts. He can now complete 135 multiplication facts in 90 seconds.If Andre is answering questions at a constant rate, how many facts can he answer per second?

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5.NBT.1

6.NS.3

5.NBT.7

Andre has been practicing his math facts. He can now complete 135 multiplication facts in 90 seconds.Noah also works at a constant rate, and he can complete 75 facts in 1 minute. Who is working faster?

• Andre
• Noah

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5.NBT.1

6.NS.3

5.NBT.7