Sum to One

Find pairs of numbers that add up to one.

Click on the cards to find matching pairs.

Instructions

This is a game for one or many players. Click on a card to see what it contains. Click on a second card and if the two cards make a pair you win them.

In the two (or more) player version a free turn is awarded to the player who finds a pair. The winner is the player who finds the most pairs.

The option to claim a trophy is available when all of the pairs have been found. The objective is to have the fewest number of ‘clicks’ recorded on your trophy.

Congratulations!

All of the pairs have been found. . Can you do it using fewer clicks?


Here are some other Pairs games for you to enjoy

Algebra Pairs

Circle Pairs

Circle Theorem Pairs

Clock Times Pairs

Congruent Pairs

Equivalent Fraction Pairs

Fill Graph Pairs

Formulae Pairs

Formulae to Remember

Fraction Decimal Pairs

Fraction Percentage Pairs

Graph Equation Pairs

Greek Letter Pairs

Hard Times

IB AA SL Formulae Pairs

Imperial Units Pairs

Indices Pairs

Loci Construction Pairs

Math vs Maths Pairs

Mathematician Pairs

Metric Units Pairs

Pairs 240

Pairs Eleven

Pairs Twenty One

Perpendicular Pairs

Rotational Symmetry Pairs

Venn Diagram Pairs

Xmas Symmetry Pairs

Positive Indices

Indices Level 1

Negative Indices

Indices Level 2

Fraction Indices

Indices Level 3

Sharon Fajou, Twitter

Wednesday, November 4, 2015

Liam, Leeds

Friday, November 3, 2017

"Good learning resource."

John Cena, WWE

Wednesday, July 11, 2018

"Really good app. My son loves it and he also plays it when he is not at school because he is engrossed so much he wouldn't come of his iPad pro because of it."

Dave, Wiltshire

Friday, October 16, 2020

"Be good to have a version where the children can see all the cards as this becomes too much of a memory game."

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

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Pairs

Sum to One

Which Sum to One activity would you like to begin with? There are five to choose from.

Click a blue button to begin.

Matching
Multiple Choice Tug Of War Snap

Description of Levels

Close

Close

Level 1 -

Level 2 - Add to One

Level 3 -

Too Fast!

You can only click on two cards at a time. Please wait before looking for another pair.