The starter and exit quiz of the lesson “Overestimating vs underestimating”, from the unit “Estimation and rounding” (Year 8 Maths) by Oak National Academy.
Free to use. Edit it, share it and hand it out to your students.
Oak National Academy
12 questions
__________ are the digits in a number that contribute to the accuracy of the number. The first significant figure is the first non-zero digit.
Which of the following are good, quick estimate calculations for 577 ÷ 19.57?
Which of the following are a correct estimate for {11.239\times3.12}\over{0.488}?
Match each calculation to its approximate answer.
A square plot of grass has a length of 7.88 m (2 d.p). Select the correct estimate for the area of the square grass plot.
Izzy thinks of a number. Truncated to 1 s.f., it is 500. Rounded to the nearest 50, it is 600. It is multiple of 5 and a palindrome . All of its digits are prime numbers. Izzy's number is ___
An __________ is an estimate for a calculation which is greater than the exact answer.
An __________ is an estimate for a calculation which is less than the exact answer.
Match each calculation with a calculation that gives its overestimate.
Match the following calculations which give an overestimated area.
Match which calculations are an overestimate, underestimate or hard to tell.
Match which calculations are an overestimate, underestimate or hard to tell.
