Skill: Use skip-counting to find totals

Explanation and Free Practice Resources

Skip-counting represents the total in equal groups by repeatedly adding the group size—for example, counting by 2s, 5s, or 10s to find the number of objects in groups of that size. The learner connects the final count to repeated addition, arrays, and multiplication situations, while understanding that the number of groups and the size of each group determine the total; formal multiplication strategies with larger factors or remainders are beyond this understanding.

Detailed Explanation: Use skip-counting to find totals

When objects are in equal groups, you can skip-count by the number in each group to find the total.

Example: There are 44 bags with 55 apples in each bag. How many apples are there altogether?

  1. Start at 00.
  2. Add 55 for each bag:
0, 5, 10, 15, 20 0,\ 5,\ 10,\ 15,\ 20
  1. The last number is (20)(20), so there are 20 apples.

You can also show this with repeated addition:

5+5+5+5=205+5+5+5=20

There are 44 equal groups, and each group has 55 objects. Skip-counting by 55 four times gives the total: 20\boxed{20}.

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Counting in Groups - Pictures (Flower Petals)


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