One More, One Less
Count forward and backward by one using everyday objects.
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When we add one object, the number grows by one. When we take one away, the number shrinks by one.
In this lesson you will:
- Say the number that comes one after another number.
- Say the number that comes one before another number.
- Show "one more" and "one less" with real objects.
One More
Put three bottle caps on the table. Add one more cap. Count them again: one, two, three, four. Three and one more makes four.
- 1 and one more is 2
- 2 and one more is 3
- 3 and one more is 4
- 4 and one more is 5
One Less
Now start with four caps and take one away. Count what is left: one, two, three. Four take away one leaves three.
- 5 take away one is 4
- 4 take away one is 3
- 3 take away one is 2
- 2 take away one is 1
Try it with your fingers
Hold up 2 fingers. Add 1 more finger. How many now? 3.
Hold up 5 fingers. Fold down 1 finger. How many are still up? 4.
Tip Say the number aloud each time you add or take away an object. Hearing the number helps you remember it.
Practice
- Count 4 spoons. Add 1 spoon. How many spoons are there now?
- Count 5 pencils. Take 1 pencil away. How many pencils are left?
- Ask someone at home to say a number between 2 and 8. Tell them the number that comes before and after it.
Recap
Adding one makes the number bigger by one. Taking one away makes it smaller by one.
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Course contents
Adding and Taking Away
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