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Students identify one possible original number from a given rounded number.

Students select from a set of numbers to show the closest number to each population fact.

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

Students round given decimal numbers to the nearest tenths, hundredths, and thousandths and identify possible original numbers from rounded numbers.

Students round six different decimal numbers of swimming times to a given number of decimal places.

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

Students work out the area of a circle and a fraction (Sector) of a circle.

Students round distances to the nearest 10 or 100.

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

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

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

Students answer question about partitioning pizzas between people.

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

This resource looks at a set of cooking instructions for making "Crispy Rounds".

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

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

Students to show how they estimate in some addition problems.

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

Students put four or five-digit numbers into the correct range of values in which that number lies.

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

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

Students interpret information presented in a table, and calculate averages.

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

Students identify significant figures in given numbers, and round numbers to a given number of significant figures.

Students sort different shapes into tessellating and not tessellating categories and explain their reasoning.