Math
We are currently getting towards the end of our addition unit and will be beginning on Multiplication next. It is important to practice these as much as possible as it is expected that students can recall multiplication fact up to 7x7 and understand how to use multiple strategies to solve up to 9x9.
Times Table Facts
TRICKS :)
The Tricks -Every multiplication has a twin, which may be easier to remember.
For example if you forget 8×5, you might remember 5×8. This way, you only have to remember half the table.
Trick for 2 times: - add the number to itself (example 2×9 = 9+9)
Trick for 5 times: - the last digit goes 5, 0, 5, 0, ...
- is always half of 10× (Example: 5x6 = half of 10x6 = half of 60 = 30)
Trick for 6 times: - when you multiply 6 by an even number, they both end in the same digit.
Example: 6×2=12, 6×4=24, 6×6=36, etc
Trick for 9 times: - the last digit goes 9, 8, 7, 6, 5,4,3,2,1,0
- your hands can help! Example: to multiply 9 by 8, hold your 8th finger down, and count "7" and "2", the answer is 72
- is 10× the number minus the number. Example: 9×6 = 10×6−6 = 60−6 = 54
- when you add the answer's digits together, you get 9. Example: 9×5=45 and 4+5=9. (But not with 9×11=99)
Trick for 10 times: - put a zero after it. Example 10 X 3= 30
Tips for 11 times:
-11× is mostly easy: from 11×2 to 11×9 you just put the two digits together. 11×2=22, 11×3=33, ..., 11×9=99.
-for 10x11 to 18x11: write the sum of the digits between the digits Example: 15x11 = 1(1+5)5 = 165
The Tricks -Every multiplication has a twin, which may be easier to remember.
For example if you forget 8×5, you might remember 5×8. This way, you only have to remember half the table.
Trick for 2 times: - add the number to itself (example 2×9 = 9+9)
Trick for 5 times: - the last digit goes 5, 0, 5, 0, ...
- is always half of 10× (Example: 5x6 = half of 10x6 = half of 60 = 30)
Trick for 6 times: - when you multiply 6 by an even number, they both end in the same digit.
Example: 6×2=12, 6×4=24, 6×6=36, etc
Trick for 9 times: - the last digit goes 9, 8, 7, 6, 5,4,3,2,1,0
- your hands can help! Example: to multiply 9 by 8, hold your 8th finger down, and count "7" and "2", the answer is 72
- is 10× the number minus the number. Example: 9×6 = 10×6−6 = 60−6 = 54
- when you add the answer's digits together, you get 9. Example: 9×5=45 and 4+5=9. (But not with 9×11=99)
Trick for 10 times: - put a zero after it. Example 10 X 3= 30
Tips for 11 times:
-11× is mostly easy: from 11×2 to 11×9 you just put the two digits together. 11×2=22, 11×3=33, ..., 11×9=99.
-for 10x11 to 18x11: write the sum of the digits between the digits Example: 15x11 = 1(1+5)5 = 165
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