Transcript Standard Form - 2July

Using Standard Form to Write
Large Numbers
By www.2july.co.uk
Indices of Ten
What Ordinary Numbers Are These ?
2
10
3
10
4
10
5
10
100
1,000
10,000
100,000
Indices of Ten
Notice that the number of zeros
matches the index number
2
10
3
10
4
10
5
10
100
1,000
10,000
100,000
Multiplying Multiples of Ten
Multiply These Numbers
100 x 2 =
200
1,000 x 3 =
3,000
10,000 x 7 = 70,000
100,000 x 9 = 900,000
Multiplying Multiples of Ten
Did you notice that all you
have to do is multiply 1 x whole
number & add the zeros behind?
100 x 2 =
200
1,000 x 3 =
3,000
10,000 x 7 = 70,000
100,000 x 9 = 900,000
Short Cut for Writing Large
Numbers
Combine these two steps for
writing large numbers.
2
6 x 10 = 600
6 x (10 x 10) = 6 x 100 = 600
Short Cut for Writing Large
Numbers
Remember!
The index is the same as the number
of zeros when using base 10.
2
6 x 10 = 600
What is the Ordinary Number?
2
7 x 10 = 700
What is the Ordinary Number?
3
8 x 10 = 8,000
What is the Ordinary Number?
4
9 x 10 = 90,000
What is the Ordinary Number?
2
4 x 10 = 400
What is the Standard Form?
500 = 5 x 10
2
What is the Standard Form?
3
6,000 = 6 x 10
What is the Standard Form?
4
90,000 = 9 x 10
What is the Standard Form?
700,000 = 7 x 10
5