# Year 1 Addition worksheets by Subject

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### Addition and subtraction to 20 wordsearch

This fun activity is designed to support children in their addition and subtraction as well as helping them to read and spell the numbers to 20.

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### One more, one less

Can you say what one more and one less is for each of these numbers?

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### Counting up in 2s, 5s and 10s

Help these footballers get along the paths to the pitch by filling in the missing numbers in the sequences.

### Number Bond Snap

Make number bond recall fun for Y1, Y2 and above with a game of Number Bond Snap. All you need is an ordinary pack of cards and a competitive streak!

Number lines are vertical versions of number lines, used in primary-school maths to help children become familiar with our number system and perform simple calculations like addition and subtraction.

### Number lines

Number lines are an essential tool in primary-school maths. Print out our colourful versions for use with your child at home, or use them as inspiration to help your child design (and perhaps decorate) their own number line.

### Choose the route: addition and subtraction

Starting with the number on the left, work out which route the girl takes to get to the yellow house. Which route does she take to get to the lilac house?

Can you solve these problems? Underline the important words as you read them through. Use your knowledge of number bonds and doubles to help find the answers.

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Can you use partitioning and your knowledge of number facts to help Pirate Pegleg with these word problems?

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### One more, one less crossword

Can you fill in the crossword by writing the answers to the clues as number words?

### Number bonds to 10 matching

Father Christmas wants 10 presents to put in each stocking. Can you draw lines linking two piles that add up to 10? This Christmas-themed worksheet will help your child practise number bonds to 10 and simple addition.

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### Number bonds to 20 snap

This is a great way to practise number bonds at speed. One player turns over a card and places it on the table, face up. The next player puts down a card next to it. Players take turns putting cards on the second pile (face up). When two cards put down together make 20, it’s snap! The person who says “snap” first keeps all the cards. Play again. The winner is the player who has all the cards at the end of the game.

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### Number bonds to 10 and 20 practice

Mia has finished her number bonds homework. How did she get on? Put a tick next to calculations she got right and a cross next to the ones that are incorrect. How many incorrect number bonds did you spot? Can you write the right answers next to them?

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### Number bonds dice game

Get a die and roll it. What number would you need to add to the number on the die to make 10? See how quickly you can work it out! This is a great way to practise those number bonds.

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### From number bonds to 10 to number bonds to 20

Write down all the number bonds to 10 you know. Look at the calculation. Can you work out how to write the number bond to 20?

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### Y1 money word problems: addition to 40p

Let's go shopping! Can you work out how much it will cost to buy these items?

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### Mixed-up mental maths

How quickly can you answer these mental maths questions? Get an adult to time you! On your marks, get set...

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### Adding 10 to a number

This is a calculation machine! It’s set to programme Add 10 today. Every number that goes in gets 10 added to it. Choose some numbers to go into the machine, then use the 100 square to add 10 to each one. Remember: you don’t need to count along 10 to add 10 to your number, just drop down one row on the 100 square.

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