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MATHS ATTACK!
1
2x things we'll look at...
TIME
What time is it?
Can you figure out the time based on the following clocks?
- What Time is it?
- Time Zone Differences
22:25PM
13:35PM
11:30PM
06:10AM
(10:25PM)
(1:35PM)
What time is it?
Can you figure out the time based on the following clocks?
Try and figure our the times your self.
21:30PM
15:30PM
16:00PM
14: 20PM
What time is it?
Why do we have different time zones?
Addition + Subtraction
Multiplication + Division
Now...
Let's Try some out!
15 唐/ 3 =
5
60/12 =
2
24/ 6 =
4
24/12 =
What is Division?
20/ 5 =
5
4
30/6 =
3
12/ 6 =
21/7 =
2
What is Multiplication?
12/4 =
3
9/3 =
What is Addition?
What is Subtraction?
28/4 =
4
16/4 =
7
The process of combining...
Addition = Plus, Add or Making more.
Subtraction is taking away, making less of something.
In definition, Division is the result of 'Equal dividing for equal sharing'.
Remember, Division in Maths is always trying to undo what we did when multiplying. Let's try an example:
Can you divide/separate the following ice-cream between 5 People?
Now try and have a go at these additional Questions!
Easy!
Hard!
Easy!
7 x ___ = 28
32 x ___ = 64
50 X ___ = 0
9 x ___ = 18
68 - ___ = 27
88 - ___ = 12
55 - 55 = ___
75 - 20 = ___
83 + ___ = 170
70 + ___ = 92
16 + ___ = 30
15 + 34 =
90 - ___ = 75
91 - ___ = 38
48 - 33 = ___
78 - 41= ___
6 x ___ = 54
10 x __ = 70
64 x 5 =
30 x ___ = 160
84 + ___ = 167
17 + 30 =
24 + ___ = 47
17 + ___ = 75
24 - ___ = 5
84 - ___ = 17
83 - 12 = ___
79 - 7 = ___
6 x ___ = 42
12 x ___ = 36
30 x ___= 0
10 x __ = 90
33 + 21 =
70 + ___ = 154
12 + ___ = 53
21 + ___ = 57
81 - ___ = 40
72 - ___ = 10
29 - 28 = ___
90 - 6 = ___
10 x __ = 80
3 x ___ = 3
20 x ___ = 20
50 x ___ = 150
45 + 11 =
50 + ___ = 92
95 + ___ = 260
22 + ___ = 113
82 - ___ = 61
72 - ___ = 49
87 - 6 = ___
65 - 45 = ___
Answer:
1) Count the number of Ice-cream.
2) We know there are 5 people to share.
3) 10 divided by 5 = 2
35 + 12 =
98 + ___ = 300
55 + ___ = 66
8 x ___ = 64
12 x ___ = 60
9 x ___ = 81
60 x ___ = 180
61 + ___ = 157
48 - ___ = 30
90 - ___ = 45
46 - 33 = ___
39 - 3 = ___
Answers: The Multiplication Quiz
Answers: The Subtraction Quiz
Answers: The Addition Quiz
Easy!
Hard!
Easy!
Hard!
Easy!
Hard!
68 - ___ = 27
88 - ___ = 12
0
41
76
55 - 55 =
55
75 - 20 =
0
32 x ___ = 64
50 X ___ = 0
2
4
9 x ___ = 18
2
7 x ___ = 28
70 + = 92
14
83 + = 170
87
22
49
15 + 34 =
16 + = 30
15
90 - ___ = 75
91 - ___ = 38
53
37
15
48 - 33 =
78 - 41=
9
6 x ___ = 54
10 x __ = 70
7
64 x 5 =
6
30 x ___ = 120
320
84 + = 167
17 + = 75
58
83
24 + = 47
47
17 + 30 =
23
24 - ___ = 5
84 - ___ = 17
67
19
83 - 12 =
79 - 7 =
71
72
6 x ___ = 42
12 x ___ = 36
30 x ___= 0
10 x __ = 90
3
7
9
0
21 + = 57
70 + = 154
36
84
41
54
12 + = 53
33 + 21 =
81 - ___ = 40
62
41
72 - ___ = 10
1
10 x __ = 80
3 x ___ = 3
8
3
1
20 x ___ = 20
50 x ___ = 150
84
1
29 - 28 =
90 - 6 =
22 + = 113
95 + = 260
91
56
45 + 11 =
50 + = 92
42
165
82 - ___ = 61
21
23
72 - ___ = 49
81
20
87 - 6 =
65 - 45 =
47
55 + = 66
35 + 12 =
11
5
9
3
8 x ___ = 64
12 x ___ = 60
9 x ___ = 81
8
60 x ___ = 180
61 + = 157
98 + = 300
96
202
If you are still a bit confused, here is a quick video to help you!
48 - ___ = 30
90 - ___ = 45
18
45
36
46 - 33 =
39 - 3 =
13
Topic Reviews!
Try and think how much you can remember.
Think about the 3x most important things you have learned today.
How did you remember it?
ANSWERS: Tree Maths
Practice makes Perfect!
So,
7
9
11
12
How did you go?
21
16
18
Different Time Zones
34
37
Adding the Tree Math
If you didn't get all of them right, don't be upset!
Just Keep practicing!
Today's Workshop:
REVISION OF OUR BASICS
If the World all sets one single time for for earth, Noon would be in the Middle of the day for some places, but it would be morning, evening or even the middle of the night for other places.
It will be a disaster for everyone!
Because the Earth enter and exit daylight at different times, we need different time zones to ensure our lives is restrain in order in a timely manner.
Still a bit confused? Now, let's look at an example!
What are we doing today?
- Addition (+),
- Subtraction (-),
- Multiplication (x) and
- Division (/).
- Decimals
- Fractions
- Time
- Quizzes & Answers of each sections.
More Challenges ahead!
Thanks
for Watching!
Common Fractions to Remember
Decimals
Thinking Questions:
What is a Decimal?
Why don't we have the same time everywhere else in the world?
What is Time Difference?
A decimal is any number in our base tenth system.
We use decimals on the right (less) and left for more numbers to be more exact.
TIME ZONES: Case Example
Let's use the different time zones between Sydney (Australia) and Seoul (South Korea) for an example.
* The Time difference between Seoul to Sydney is 1 Hour behind.
Decimals Questions
Fractions
What is a fraction?
A fraction is a part of something.
Try and work out these Questions by yourself.
Good Luck!
Assume we want to call a good friend in Seoul, we need to calculate the local time from where we are here in Sydney at 8PM in the evening.
Sydney Time: 20:00 (8PM at Night)
Seoul Time: (Current Sydney Time - 1 Hour)
= 19:00 (7PM local time in Seoul)
Based on our calculations, it is not too late to call at 7PM (Local Seoul Time)!
MATHS ATTACK!
For better results, please turn the volume...for a bit. Enjoy! :P