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## Primary 1 Maths

Here is a list of all of the maths skills students learn in Primary 1! These skills are organised into topics. To start practising these skills, log in your KooBits account and choose any topic and skill under Mission.

### Numbers Up to 10

- Count to 10 in numbers
- Count to 10 in words
- To count the number of objects
- Count to 0
- Compare the number of objects in two or more sets
- Compare two numbers within 10
- Count on to find 1 more
- Count back to find 1 less
- Concept of more-than using pictorial representation
- Concept of less-than using pictorial representation
- Find ordinal relationship with just-before and just-after
- Find multiple progression ordinal relationship with greater-than and less-than
- Find the missing number(s) in a given number pattern

### Addition Within 10

- Make number bonds for numbers up to 10
- Use number bonds to add in any order
- Count on to add within 10
- Adding the parts to find the total
- Writing addition equations
- Solve word problems involving addition within 10
- One-step addition problem involving the total quantity after an event
- To find total quantity for two characters
- Addition problem involving two persons with more-than relationship. Find quantity for the 2nd person.

### Subtraction Within 10

- Subtract by taking away
- Count back to subtract within 10
- Count on to subtract within 10
- Use number bonds to subtract
- Writing subtraction equations
- Solve word problems involving subtraction by finding the other part
- Solve word problems involving subtraction by taking away
- One-step subtraction problem involving the final quantity after an event
- Subtraction problem involving two persons with less-than relationship. Find quantity for the 2nd person.
- One-step subtraction problem to find the age difference between two persons

### 2D Shapes

- Identify 2D shapes
- Identify 2D shapes from real objects and pictures
- Grouping shapes by attributes – sides, corners, sizes and colours
- Complete patterns with 2D shapes
- Sum numbers involving shapes of circle, triangle, rectangle and square
- Identify pattern formations involving shapes of circle, triangle, rectangle and square
- Identify pattern formations involving shapes in combination of circle, triangle, rectangle and square
- Sum numbers involving length of objects

### Ordinal Numbers

- Use first, second, up to tenth
- Use symbols 1st, 2nd, 3rd, up to 10th
- Use before, after and between to tell position
- Use left, right and next to
- Find the number in the number list (numerical ordinal terms)
- Find the number in the number list (word ordinal terms)
- Find and compare two numbers in the number list
- Find and add two numbers in the number list
- Find and get the difference from two numbers in the number list

### Numbers Up to 20

- Count to 20 in numbers
- Count to 20 in words
- Make a ten and count on
- Count the number of objects in a given picture
- Use place value charts to show numbers to 20
- Use place value to compare two numbers within 20
- Use place value to compare three numbers within 20
- Find a number more than another number
- Find a number less than another number
- Concept of more-than using pictorial representation
- Concept of less-than using pictorial representation
- Find number just-before or just-after another number
- Find number greater than or smaller than another number
- Order numbers within 20 by making number patterns

### Addition Within 20

- Add by counting on
- Add two 1-digit numbers by making 10
- Add 1-digit and 2-digit numbers
- Solve one-step word problems involving addition
- One-step addition problem involving the total quantity after an event

### Subtraction Within 20

- Subtract by counting back
- Subtract from ones only
- Subtract to get 10 first
- Subtract from 10 first
- Solve one-step word problems involving subtraction
- One-step subtraction problem involving the final quantity after an event
- One-step subtraction problem to find the age difference between two persons

### Picture Graphs

- Interpret data in picture graphs
- Describe the data presented in a picture graph using ‘most’, ‘least’, ‘greatest’, ‘smallest’, ‘as much as’, and ‘as many as’
- Find sum using data given in a picture graph
- Find the sum of particular objects using data given in a picture graph

### Numbers Up to 100

- Count to 40 in numbers
- Write numbers to 40 in words
- Count the number of objects in a given picture
- Use place value charts to show numbers to 40
- Compare two numbers within 40
- Compare three numbers within 40
- Concept of more-than using pictorial representation
- Concept of less-than using pictorial representation
- Find number just-before or just-after another number
- Find number greater than or smaller than another number
- Find the missing number given a number pattern
- Count to 100 in tens
- Count to 100 in tens and ones
- Use place value charts to show numbers up to 100
- Compare numbers within 100 when the tens are different
- Compare numbers within 100 when the tens are equal
- Find missing numbers in pattern by adding or subtracting
- Find number just-before or just-after another number
- Identify the greatest or the smallest number from a given number list
- Identify the greatest or the smallest number from a given number list, and find the final value after one addition.
- Identify the greatest or the smallest number from a given number list, and find the final value after one subtraction
- Identify the greatest or the smallest number from a given number list and find the difference

### Addition & Subtraction Within 100

- Addition without regrouping
- Addition with regrouping
- Subtraction without regrouping
- Subtraction with regrouping
- Add three 1-digit numbers within 40
- One-step addition problem involving the total quantity after an event
- One-step subtraction problem involving the final quantity after an event
- One-step subtraction problem to find the age difference between two persons
- Add ones to 2-digit numbers within 100 without regrouping
- Add tens to 2-digit numbers within 100
- Add 2-digit numbers within 100 without regrouping
- Add 2-digit numbers within 100 with regrouping
- Subtract ones from 2-digit numbers without regrouping
- Subtract tens from 2-digit numbers
- Subtract 2-digit numbers without regrouping
- Subtract 2-digit numbers with regrouping
- One-step addition problem involving the total quantity after an event
- One-step subtraction problem involving the final quantity after an event
- One-step subtraction problem to find the age difference between two persons

### Length

- Compare height – tall and short
- Compare length – long and short
- Compare the lengths of two items
- Use the terms tallest, longest, and shortest
- Compare the lengths of three items
- Measure length using common objects
- Measure length using different objects
- Measure items in units
- Find the total length of two items
- Find the difference between two items

### Multiplication

- Multiplication as repeated addition
- Write multiplication sentences
- Multiplication within 40
- Solve word problems involving multiplication within 40
- Find the product of two numbers using the term groups
- One-step multiplication problem to find quantity for an item for one person

### Division

- Divide by sharing
- Divide by grouping
- Division within 20
- Solve word problems involving division within 20
- Find the quotient of two numbers using the term groups
- One-step division problem to find quantity for item each person gets after sharing equally

### Time

- Tell time to the hour
- Tell time to the half hour
- Appropriateness of events at different times of the day

### Money

- Recognise coins and notes of different denominations
- Count amount of money in cents up to $1
- Count amount of money in dollars up to $100
- Match a coin of one denomination to an equivalent set of coins of another denomination
- Match a note of one denomination to an equivalent set of notes of another denomination
- Compare amounts of money
- Use combination of coins to buy things
- Solve word problems involving adding and subtracting money in dollars only or in cents only
- One-step addition problem involving cents
- One-step addition problem involving dollars
- One-step subtraction problem to find the amount difference (in dollars) between two persons