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First/Place Value Rounding

Rounding to Meet a Constraint (Multiple Choice)

Estimate totals against a limit and decide if it’s feasible.
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Rounding to Meet a Constraint (Multiple Choice) preview

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Prerequisites
🎯 Round to the Nearest 106 WS
643 = ____
🎯 Round to the Nearest 1006 WS
4,623 = ____
🎯 Round to the Nearest 1,0006 WS
83,623 = ____
What to Do Next
Estimating with Rounding Word Problems (Multiple Choice)6 WS
A bookstore sold 217 books on Saturday and 389 books on Sunday. About how many books were sold in all?

Practice Questions

  1. You have $50. Items cost $12.45, $9.99, $5.10, and $18.25. Can you afford all?
    Show answer

    (B) Yes – about $45

  2. Budget $100. Items: $27.50, $33.40, $19.95, $21.49. Can you afford all?
    Show answer

    (C) No – about $102

  3. You have 3 hours to work: tasks of 38 min, 42 min, and 56 min. Will you finish in time?
    Show answer

    (A) Yes – about 140 min

  4. You have 250 stickers. You give 28 stickers to each of 9 students. Do you have enough?
    Show answer

    (D) No – about 270 needed

  5. Backpack limit 20 lb. Items weigh 6.4 lb, 7.5 lb, 3.3 lb, 1.2 lb. Is it under the limit?
    Show answer

    (A) Yes – about 18 lb

Teacher Resources
Teaching Notes

Have students state both the rounded total and the decision (yes/no).

Vocabulary
Estimate: Find an approximate value.
Constraint: A limit or restriction.
Common Mistakes
  • Incorrect rounding to nearest place value.
  • Misinterpreting the constraint (under/over).
  • Calculating exact totals instead of estimates.
  • Choosing an inefficient rounding strategy.
Differentiation
SupportProvide number lines. Practice rounding to nearest ten first.
ChallengeIntroduce multi-step problems or justify rounding choices.
Discussion Questions
  • Why is rounding useful for quick decisions?
  • When is an estimate insufficient for a constraint?
  • How does rounding up or down impact your decision?
  • Can you think of other real-world examples?
Extension Activities
  • Round to nearest 10 for totals.
  • Round to nearest 100 for totals.
  • Estimate savings on sale items.
Parent Tip

Ask your child to estimate the total cost of groceries.

Learning Path
Skill Cluster

Number Sense & Estimation

Estimated Time

12 minutes

Skills Practiced
Estimate constraint