NRICH Primary Curriculum Map

The problems linked below have detailed Teachers' Resources suggesting how they can be integrated into lessons.

Please email any comments to primary.nrich@maths.org

Looking for secondary problems? See the NRICH Secondary Curriculum Map.

Key

Games are indicated by ‘G’ and Articles by 'A'.

Tasks badged filled star are suitable for the whole class;
Tasks badged filled starfilled star are suitable for the majority;
Tasks badged filled starfilled starfilled star are for those who like a serious challenge.

Highlight ‘Thinking mathematically’ or ‘Mathematical mindset’ problems

Number - Fractions, Decimals and Percentages

EYFS Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Post-Primary

Counting in Fractional Steps

Count up and down in tenths
Count up and down in hundredths

Fractions, Decimals and Percentages

Recognising Fractions

Recognise, find and name a half as one of two equal parts of an object, shape or quantity
Two Halves Two Halves
This task provides children with the opportunity to investigate halving different shapes and check that they have made two halves.
Fair Feast Fair Feast
Here is a picnic that Petros and Michael are going to share equally. Can you tell us what each of them will have?
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Happy Halving Happy Halving
Can you split each of the shapes below in half so that the two parts are exactly the same?
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Halving Halving
These pictures show squares split into halves. Can you find other ways?
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Recognise, find, name and write fractions ⅓, ¼, ²/₄ and ¾ of a length, shape, set of objects or quantity
Recognise, find and write fractions of a discrete set of objects: unit fractions and non-unit fractions with small denominators
Fraction Match Fraction Match
A task which depends on members of the group noticing the needs of others and responding.
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Recognise that hundredths arise when dividing an object by one hundred and dividing tenths by ten
Recognise and use thousandths and relate them to tenths, hundredths and decimal equivalents (appears also in Equivalence)

Fractions, Decimals and Percentages

Recognise that tenths arise from dividing an object into 10 equal parts and in dividing one-digit numbers or quantities by 10
Recognise, find and name a quarter as one of four equal parts of an object, shape or quantity
Recognise and use fractions as numbers: unit fractions and non-unit fractions with small denominators

Comparing Fractions

Compare and order unit fractions, and fractions with the same denominators
Compare and order fractions whose denominators are all multiples of the same number
Compare and order fractions, including fractions >1
More Fraction Bars More Fraction Bars
What fraction of the black bar are the other bars? Have a go at this challenging task!
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Extending Fraction Bars Extending Fraction Bars
Can you compare these bars with each other and express their lengths as fractions of the black bar?
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Fractions, Decimals and Percentages

Comparing Decimals

Compare numbers with the same number of decimal places up to two decimal places
Read, write, order and compare numbers with up to three decimal places
Identify the value of each digit in numbers given to three decimal places

Fractions, Decimals and Percentages

Rounding Including Decimals

Round decimals with one decimal place to the nearest whole number
Round the Dice Decimals 1 Round the Dice Decimals 1
Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?
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Round decimals with two decimal places to the nearest whole number and to one decimal place
Round the Dice Decimals 2 Round the Dice Decimals 2
What happens when you round these numbers to the nearest whole number?
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Solve problems which require answers to be rounded to specified degrees of accuracy

Fractions, Decimals and Percentages

Equivalence (including Fractions, Decimals and Percentages)

Write simple fractions e.g. ½ of 6 = 3 and recognise the equivalence of ²/₄ and ½
Recognise and show, using diagrams, equivalent fractions with small denominators
Matching fractions Matching fractions
Can you find different ways of showing the same fraction? Try this matching game and see.
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Recognise and show, using diagrams, families of common equivalent fractions
Fractional Wall Fractional Wall
Using the picture of the fraction wall, can you find equivalent fractions?
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Bryony's Triangle Bryony's Triangle
Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?
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Fractional Triangles Fractional Triangles
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
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Identify, name and write equivalent fractions of a given fraction, represented visually, including tenths and hundredths
Tumbling Down Tumbling Down
Watch this animation. What do you see? Can you explain why this happens?
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Use common factors to simplify fractions; use common multiples to express fractions in the same denomination

Fractions, Decimals and Percentages

Recognise and write decimal equivalents of any number of tenths or hundredths
Read and write decimal numbers as fractions (e.g. 0.71 = ⁷¹/₁₀₀)
Associate a fraction with division and calculate decimal fraction equivalents (e.g. 0.375) for a simple fraction (e.g. ⅜)
Recognise and use thousandths and relate them to tenths, hundredths and decimal equivalents
Recognise and write decimal equivalents to ¼; ½; ¾
Recognise the per cent symbol (%) and understand that per cent relates to 'number of parts per hundred', and write percentages as a fraction with denominator 100, and as a decimal
Recall and use equivalences between simple fractions, decimals and percentages, including in different contexts
Doughnut percents Doughnut percents
A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.
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Addition and Subtraction of Fractions

Add and subtract fractions with the same denominator within one whole (e.g. 5/7 + 1/7 = 6/7)
Add and subtract fractions with the same denominator
Add and subtract fractions with the same denominator and denominators that are multiples of the same number
Linked Chains Linked Chains
Can you find ways to make twenty-link chains from these smaller chains? This gives opportunities for different approaches.
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A4 Fraction Addition A4 Fraction Addition
Try adding fractions using A4 paper.
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A4 Fraction Subtraction A4 Fraction Subtraction
This task offers opportunities to subtract fractions using A4 paper.
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Add and subtract fractions with different denominators and mixed numbers, using the concept of equivalent fractions
Fraction Lengths Fraction Lengths
Can you find combinations of strips of paper which equal the length of the black strip? If the length of the black is 1, how could you write the sum of the strips?
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Number Operations and Calculation Methods

Recognise mixed numbers and improper fractions and convert from one form to the other and write mathematical statements > 1 as a mixed number (e.g. 2/5 + 4/5 = 6/5 = 1 1/5)

Multiplication and Division of Fractions

Write simple fractions e.g. 1/2 of 6 = 3 and recognise the equivalence of 2/4 and 1/2
Recognise, find and write fractions of a discrete set of objects: unit fractions and non-unit fractions with small denominators
Multiply proper fractions and mixed numbers by whole numbers, supported by materials and diagrams
Multiply simple pairs of proper fractions, writing the answer in its simplest form (e.g. 1/4 x 1/2 = 1/8); multiply one-digit numbers with up to two decimal places by whole numbers

Number Operations and Calculation Methods

Divide proper fractions by whole numbers (e.g. 1/3 ÷ 2 = 1/6)

Multiplication and Division of Decimals

Multiply one-digit numbers with up to two decimal places by whole numbers

Number Operations and Calculation Methods

Find the effect of dividing a one- or two-digit number by 10 and 100, identifying the value of the digits in the answer as ones, tenths and hundredths
Identify the value of each digit to three decimal places and multiply and divide numbers by 10, 100 and 1000 where the answers are up to three decimal places
Use written division methods in cases where the answer has up to two decimal places

Problem Solving

Solve problems that involve all of the above
Solve problems involving increasingly harder fractions to calculate quantities, and fractions to divide quantities, including non-unit fractions where the answer is a whole number
Fractions in a Box Fractions in a Box
The discs for this game are kept in a flat square box with a square hole for each. Use the information to find out how many discs of each colour there are in the box.
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Andy's Marbles Andy's Marbles
Andy had a big bag of marbles but unfortunately the bottom of it split and all the marbles spilled out. Use the information to find out how many there were in the bag originally.
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Chocolate Chocolate
There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?
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Solve problems involving numbers up to three decimal places
Forgot the Numbers Forgot the Numbers
On my calculator I divided one whole number by another whole number and got the answer 3.125. If the numbers are both under 50, what are they?
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Route Product Route Product
Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?
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Solve problems involving the calculation of percentages [for example, of measures, and such as 15% of 360] and the use of percentages for comparison
Would You Rather? Would You Rather?
Would you rather: Have 10% of £5 or 75% of 80p? Be given 60% of 2 pizzas or 26% of 5 pizzas?
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Fractions, Decimals and Percentages

Number Operations and Calculation Methods

Solve simple measure and money problems involving fractions and decimals to two decimal places
Solve problems which require knowing percentage and decimal equivalents of 1/2, 1/4, 1/5, 2/5, 4/5 and those with a denominator of a multiple of 10 or 25
Matching Fractions, Decimals and Percentages Matching Fractions, Decimals and Percentages
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
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