Estimation resources

In this practical task, students estimate the weight of two different sized bags, then check their estimates using kitchen scales.

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

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

Students estimate the amount of liquid in four different glasses based on the amount given that is in a fifth glass.

Students estimate a subtraction problem, share their methods, discuss the rounding one number method, and then do more problems by rounding one number.

Students explain subtraction estimation methods used to solve a word problem.

In this practical task, students estimate and then measure how far they can jump.

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

This practical task requires students to lift a 1 kg weight and then estimate whether a range of everyday objects weigh less than, about the same as, or more than 1 kilogram.

In this practical task, students decide which of four shapes have the same area, then use 100s blocks to check their answer.

Using given information about a shop's takings students round the amounts to give estimated totals for four weeks takings.

In this practical task, students estimate how many multi-link blocks equal the length of two common classroom items. They then check their estimate with the blocks, then measure with a ruler.

Students calculate or estimate the area for each of three shapes on a grid.

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

Students use a scale map to estimate the area of Antarctica and explain their method.

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

Students estimate the sum of a number of fractions.

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

Students explain errors in calculations that include all operations, decimal values, and percentages.

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

Students decide which children are estimating and which are not, and explain their reasoning.

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

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

Students select the best estimate for division and multiplication problems involving stamps, money, and baskets of pinecones.

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.