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The ideas in this addition lesson are taken from Add & Subtract 2-B ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student. Carrying to tens
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Circle ten little cubes to show that they form one ten. How
many ones are left over? The
sum goes over TEN.
What if we already have some tens? Circle ten little cubes to make one whole ten. Then count the whole tens, including the one you made by circling the little cubes. Count the ones.
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If you can form a new ten from the ones, you are trading or exchanging the ten ones into 1 ten. It is also called carrying to tens. You can picture someone 'gathering' ten little cubes in his lap and 'carrying' them over into the tens column as a 1 ten, so to speak.
Example problem types
1. Circle ten ones to make 1 new ten. Mark a little '1' in ten tens column above the other numbers to signify this new ten. Then add in the tens-column as usual, adding the little '1' also.
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2. Add. If the ones go over to the next ten, mark a little '1' above the tens column.
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The fast, FUN, and easy way to learn multiplication. Learn the upper times tales in two sittings using mnemonic stories.
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