Unit 3 - Lesson 17 - Grade 3: Illustrative Mathematics

Explain your reasoning.

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Explain your reasoning.

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Explain your reasoning.

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There are 212 beads in a plastic bag. Then, 98 of the beads are used to make a necklace. Finally, 308 beads are placed in the bag.Priya makes an estimate that there are about 400 beads in the bag now. Does Priya's estimate make sense? Explain your reasoning.

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Clare has 252 beads. She used 92 beads to make some bracelets. Then, a friend gave her 203 beads. How many beads does Clare have now?

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Han had 558 beads. His sister had 302 beads. They combined their beads for an art project that used 250 beads. How many beads do they have left?

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Jada has 326 beads. She gives her friend 32 beads. Then, Jada uses 84 beads to make a bracelet for her cousin. How many beads does Jada have now?

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Noah starts an art project on Monday and uses 624 beads. On Tuesday he uses 132 more beads. Finally, on Wednesday he finishes the project by using 48 more beads. How many beads did Noah use on his art project?

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Trade work with a partner. Decide whether your partner’s answer for their problem makes sense. Explain your reasoning.

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In the bin there are 124 beads. Ninety-six more beads are dumped in the bin. Then 53 beads are used to make a bracelet.Tyler says there are 273 beads in the bin now.Explain why Tyler’s statement doesn’t make sense.

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