Recall multiplication facts of two, three, five and ten and related division facts (ACMNA056)
LO:
To recall multiplication facts of 2, 3, 5 and 10.
Know:
- Addition facts
- How to add
- Basic multiplication facts
Understand:
- That multiplication facts can be used to quickly solve numerical problems.
Do:
- I can recall multiplication facts of 2, 3, 5 and 10.
Multiplication is Repeated Addition
Multiplication is just adding over and over again.
If you look at the picture, if I have 5 groups of 3 that’s the same as 3 + 3 + 3 + 3 + 3, which means that I have 5 lots of 3. 5 x 3 = 15.
In this picture, I have 4 lots of 3 stars.
I can go 3 + 3 + 3 + 3 = 12, or to make it easier and quicker I can go 3 x 4 = 12.
Multiplication as Groups Of
Multiplication can also be groups of.
I can group the flowers into groups of 3. I have 4 groups of 3 which means I have 12 flowers in total.
I can group the apples into groups of 5. I have 5 groups of 5 which means I have 25 apples in total.
2 Times Tables
2 times tables have some very interesting features.
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They always make even numbers.
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They always make patterns of 2.
3 Times Tables
3 times tables have some very interesting features.
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They alternate between odd and even numbers.
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If an odd number is multiplied by 3 the answer is always odd.
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If an even number is multiplied by 3 the answer is always even.
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They always make patterns of 3.
5 Times Tables
5 times tables have some very interesting features.
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They alternate between odd and even numbers.
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They always end in 5 or 0.
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If an odd number is multiplied by 5 the answer is always odd and always ends in 5.
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If an even number is multiplied by 5 the answer is always even and always ends in 0.
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They always make patterns of 5.
10 Times Tables
10 times tables have some very interesting features and is probably the easiest to memorise.
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They are always even numbers.
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When multiplying any number by 10 all you have to do is add a 0 on the end of the original number.
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They always make patterns of 10.
Teaching Ideas
Non-Linguistic Representations
ACARA Work Samples
