Place Value
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Fun activity
Games:
Develop a matching game:
In a group make cards with numerals and expanded form of the number to develop a matching game. An example is given for you below:
Rounding
What is rounding? Let's watch a video-
Mental Math
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Adding by grouping tens |
Complement numbers |
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Subtraction
Multiplication
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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Worksheets: Times table facts
Multiplication squares
Games
Using array to multiply
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Multiplying using groups
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Multiplication word problems
Multiplication Stations
Challenge yourself
Project
Source : http://eworkshop.on.ca/edu/pdf/Mod30_lesson_summ_mult.pdf
Division
Grouping
Division sentence
Division with Multiplication Table
Remainder
Basic division
Introduction to long division
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