Ages 10–11🧮 Mathematics9 verified questions on this shelf
Estimation to check answers to calculations
Use estimation to check answers to calculations and determine, in the context of a problem, an appropriate degree of accuracy
Try three questions
Tap an answer to check it. Every question and explanation was checked by independent verifiers that must agree.
Question 1 of 3
A school is planning a snack for a field trip. About 487 students will attend, and each student will likely eat about 1/4 of a snack pack that costs $23. To decide if the trip fits the budget, should the school (A) calculate the exact total cost, (B) give an estimate of the total cost, (C) calculate the exact cost per student, or (D) give an estimate of the cost per student?
Question 2 of 3
The middle school is organizing a field‑day snack station. About 1,238 students are expected to attend, and each student will probably try 3 snack stations, eating roughly 2 ounces of fruit at each station. The cafeteria manager wants to know roughly how many ounces of fruit to order. Should she give an exact total or an estimate?
Question 3 of 3
A baker is preparing for a school celebration with 158 students. Each student will probably eat about 7 cookies. To decide how many cookies to bake, should the baker give an exact total or an estimated amount? Choose the best approach.
Keep going on this shelf
A free account keeps practising Estimation to check answers to calculations with 9 verified questions, tracks the Skill as it blooms, and connects a real teacher when you want one. Every student account needs a parent's email first.