Rounding and Estimating
These activities cover rounding to the nearest ten and hundred, estimating the sum of two numbers, using number facts to check calulations, and rounding and estimating decimals.
Flight of the Frisbee
How far can you throw the frisbee? It lands between two distance markers on the playing field, but which one is it close...
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First used for Objective
Round two-digit or three-digit numbers to the nearest 10 or 100 and give estimates for their sums and differences
I can round numbers to the nearest 10 or 100 and estimate a sum or difference
Year 3, Block A, Unit 2
Round of Golf
How far has Zero G hit the golf ball? Read the distance in cm and round it to the nearest 10. On the last level there ar...
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First used for Objective
Round two-digit or three-digit numbers to the nearest 10 or 100 and give estimates for their sums and differences.
I can use rounding to estimate a sum or difference.
Year 3, Block A, Unit 3
Round the Crowds
How many people are at the soccer match? Round the numbers in each stand to the nearest hundred and then work out the to...
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First used for Objective
Use knowledge of rounding, number operations and inverses to estimate and check calculations
I can use rounding to estimate the the answer to a calculation
Year 4, Block B, Unit 2
Doubling Machine
The doubling machine takes random one point decimal numbers and doubles them, but for every correct number it produces i...
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First used for Objective
Use knowledge of place value and addition and subtraction of two-digit numbers to derive sums and differences and doubles and halves of decimals
I can work out doubles of decimals
Year 5, Block A, Unit 2
Shopping Cost
Your in a hurry at the shops and you've only got a certain amount of money, How much will the items in the basket cost? ...
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First used for Objective
Use knowledge of rounding, number operations and inverses to estimate and check calculations
I can estimate and check the result of a calculation
Year 4, Block A, Unit 2
Party Bag Rounding
Triangle Man is making up the party bags for a big celebration but he only knows to the nearest ten or hundred how many ...
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First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
I can use rounding to estimate and check calculations
Year 5, Block D, Unit 2
Bun Bonanza
Breadhead is buying buns for his burger van but how many does he need? Use rounding and number facts to estimate if his ...
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First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
I can estimate and check the result of a calculation
Year 5, Block A, Unit 1
First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
- I can round numbers to the nearest 10, 100 and 1000
Year 5, Block B, Unit 3
Beans Between
Use knowledge of times tables and place value to multiply multiples of ten and a hundred. Then use rounding to estimate ...
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First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
I can estimate the result of a calculation
Year 5, Block A, Unit 2
Percentage Cuts
Practice estimating fractions and percentages of objects by helping out top chef The Great Zoltini. Follow his instructi...
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First used for Objective
Understand percentage as the number of parts in every 100 and express tenths and hundredths as percentages
I can estimate a simple fraction or percentage of a quantity.
Year 5, Block E, Unit 2
Sleuthing Scales
Dog detective Zero Gravity is on the search for all the numbers that are missing from unnumbered scales. Can you read th...
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First used for Objective
Interpret a reading that lies between two unnumbered divisions on a scale.
I can find the value of each interval on a scale.
Year 5, Block C, Unit 2
First used for Objective
Use approximations, inverse operations and tests of divisibility to estimate and check results
I can estimate and check the result of a calculation
Year 6, Block B, Unit 2
Speedy Shopping
Use knowledge of rounding and number facts to make a quick estimate about which shopping basket you have enough money to...
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First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
I can check whether a calculation is correct and explain how I did this
Year 5, Block B, Unit 1
First used for Objective
Calculate the perimeter and area of rectilinear shapes; estimate the area of an irregular shape by counting squares
I can find the perimeter and area of shapes and estimate the area of irregular shapes
Year 6, Block D, Unit 3