Estimation resources

Students show how they would carry out estimation of multiplication tasks.

This practical task requires students to use a 1 metre measure to estimate the dimensions of a room, and then calculate the volume of the room.

Students show how they estimate in some multiplication problems and come up with sensible estimates.

Students calculate an exact square root and estimate approximate square roots by finding the length of the square flower bed of a given area, and give an explanation for their answers.

In this task students decide which people are estimating and which are not, and explain their reasoning.

Students estimate and explain how they estimated their answer for two number problems: one involving multiplication; and the other division.

Students estimate an addition problem, share their methods, discuss the averaging method, and then do more problems using averaging.

Students estimate a multiplication problem, share their methods, discuss the rounding method, and then do more estimation problems using rounding.

Students estimate an addition problem, share their methods, discuss the front-end method and then do more problems using front-end.

This practical task involves students making best estimates of sets of items and clearly demonstrating their method(s) of estimation.

This task requires students to estimate some addition problems using any appropriate method.

Students discuss making an interval estimate in multiplication problems (i.e., getting a lower and an upper limit for the actual answer using the front-end and rounding-up estimation methods). They then use this method on two problems.

Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.

This task requires students to estimate some addition problems using any appropriate method.

Students to show how they estimate in some addition problems.

Students estimate a multiplication problem, share their methods, discuss the front-end method, and then do more problems using front-end.

Students use rounding to estimate totals then discuss this as a method of estimation.

This task requires students to show how to estimate numbers of items in some multiplication problems using any acceptable estimation strategy.

In this task students decide which people are estimating and which are not, and explain their reasoning.

Students estimate the sum of a number of fractions.

Students estimate an addition problem, share their methods, discuss the rounding method, and then do more problems using rounding.

Students use estimation strategies to calculate the number of vegetables they can buy with given amounts of money.

Students explain multiplication estimation methods used to solve word problems.

This task requires students to estimate some addition problems using any appropriate method.

Students estimate the height and length of various items around their school.