Solution:

a. 275. Sample response: Because 274 is closer to 270 than 280 but 275 is halfway between 270 and 280 and we round it to 280

b. 284. Sample response: Because if I add 1 more, then I get 285, which rounds to 290.

Goals

Round whole numbers to the nearest multiple of 10 and the nearest multiple of 100.

Item & scoring guidance:

This item is worth 2 points.
- Each cloze response item is worth 1 point and will automatically score.
- The essay and drawing item will not factor into the score but can be manually scored.

Responding To Student Thinking

Students determine the least number that rounds to 280 to the nearest ten, but not the greatest, or vice versa

While students play Stage 1 of Tic Tac Round in the next section, listen for the ways they explain why a number rounds to the nearest ten or the nearest hundred. Invite selected students to explain their reasoning, using a number line. Consider asking, “What would be the greatest number that would round to the same ten (or hundred)? What would be the least number that would round to the same ten (or hundred)?”

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Checkpoint Scoring Guidance