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Rounding and Multi-Digit Addition Check Point U3 M2

Last updated about 6 years ago

19 Nsɛmmisa

1

1

1

1

1

1

1

1

1

1

1

1

1

1

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14.

Solve the problem. Show your work. Use a method that is more efficient than counting on or counting backward by 1's.

1

1

1

1

1

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1.

Your partner says that you can fill the basket for 70. Do you agree with her?

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2.

Explain your answer using complete sentences. If you agree with your partner, explain why. If you disagree, explain why.

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3.

You pick 3 cards with the following numbers on them: 5, 9, and 3. Which 3-digit number do you choose to make with these numbers?

359

395

539

593

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4.

In complete sentences explain why you choose this number.

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5.

Round 54 to the nearest 10.

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6.

Round 18 to the nearest 10.

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7.

Round 85 to the nearest 10.

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8.

Round 137 to the nearest 10.

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9.

Rouns 143 to the nearest 100.

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10.

Round 378 to the nearest 100.

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11.

Round 209 to the nearest 100.

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12.

Rouns 450 to the nearest 100.

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13.

Which of the equations below does NOT represent this problem? (the letter w stands for Eloise's worms).

34 + w=63

34 + 63= w

63-34=w

63-w=34

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15.

Eloise collected _____ worms.

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16.

Max extimated that they counted about 300 stars in all. Sam estimated that they counted about 400 stars in all. Whose estimate is better?

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17.

Explain in complete sentences why the estimate you chose is better than the other when using rounding.

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18.

How many stars did Sam and Max actually count in all? Show your work. Use a strategy that is more efficient than counting by 1's.

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19.

Sam and Max actually counted ______ stars in all.