LEARN · PRACTISE · DISCOVER

Use Doubles and Near Doubles

Read at your own pace. Try the practice, then continue your course.

Use doubles you know and one more or one less to solve nearby addition facts within 20.

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THE CURIOSI · EXPLORE & TRY

Explore the picture together. Open each numbered card for a little help.

Look at each counter or step. Open the explanations to connect the picture and the equation.

1Double 7: 14

Seven counters in each group make 7 + 7 = 14.

2One extra counter

The second group has eight, which is one more than seven.

3Near double: 15

Add one to fourteen: 7 + 8 = 15.

Count carefully and explain your steps. Use objects or fingers whenever they help.

Show the near-double total for 7 + 8. Tap a box to add a counter; tap it again to remove it. Each frame holds ten.

0 counters selected.

Choose one answer for each question, then check. Practice results stay on this page and do not change course completion.

1. 7 + 8 = 15 14 16

2. Which is a double? 6 + 7 6 + 8 6 + 6

3. If 8 + 8 = 16, then 8 + 9 = 18 17 16

Read the answer explanations

Ask an adult to read the instructions with you. Use large safe counters or drawings; take a break whenever you need one.