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The ideas in this addition lesson are taken from Addition 1 ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student. Addition facts for sums with 5 and 6
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| You can divide five elephants into groups of two and three:
Also, you can divide five elephants into groups of zero and five: | |
What kind of groupings can you make? Think of ALL the possibilities, and write them down here:
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| 5 = ___ + ___ 5 = ___ + ___ | 5 = ___ + ___ 5 = ___ + ___ | 5 = ___ + ___ 5 = ___ + ___ | ||
What number is missing? Don't write the answer down but just think it in your head. Go over and over again these problems with your teacher or in your head until you know the missing numbers by heart.
1 + = 5 2 + 0 + | 4 + = 5 3 + 5 + | + 2 = 5
| + 3 = 5
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What kind of two groups can you divide six hippos? Do the grouping and write the addition facts.
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6 = 0 + 6 |
6 = 6 + 0 |
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6 = 1 + 5 |
6 = ___ + ___ |
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6 = ___ + ___ |
6 = ___ + ___ |
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6 = ___ + ___ |
Drill. What number is missing? Don't write the answer down but just think it in your head. Go over and over again these problems with your teacher or in your head until you know the missing numbers by heart.
1 + = 6
2 + 0 + 6 + | 4 + = 6 3 + 5 + 0 + | + 2 = 6
| + 3 = 6
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1. Complete the X's to make 6 or 5 and write the addition sentence.
| XXX 3 + __ = 6 |
X 1 + __ = 5 |
XXXX __ + __ = 5 |
0 + __ = 6 |
2. What is similar about these problems?
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3. Find the missing addend - from memory, not by counting. Use the
addition facts you've learned.
| 0 + __ = 6 4 + __ = 6 __ + 2 = 5 | 1 + __ = 5 2 + __ = 6 __ + 1 = 6 |
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