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# Adding and Subtracting with Standard Form

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by

## Mr Mattock

on 17 January 2016

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#### Transcript of Adding and Subtracting with Standard Form

Adding and Subtracting with Standard Form
Starter
Calculate the following

(a) 600000 + 300

(b) 7400000 - 80000

(c) 0.42 + 0.00056
Main Activity
Complete the adding and subtracting worksheet
Plenary
L.O. - Add and subtract with numbers in standard form (Grade 7 +)
Starter
Calculate the following

(a) 600000 + 300
= 600300

(b) 7400000 - 80000
= 7320000

(c) 0.42 + 0.00056
= 0.42056
Adding and Subtracting with Standard Form
Calculate the following

(a) 6 x 10 + 3 x 10

(b) 7.4 x 10 - 8 x 10

(c) 4.2 x 10 + 5.6 x 10
5
2
6
4
-1
-4
Adding and Subtracting with Standard Form
Calculate the following

(a) 6 x 10 + 3 x 10
= 6000 x 10 + 3 x 10 = 6003 x 10
= 6.003 x 10
(b) 7.4 x 10 - 8 x 10
= 740 x 10 - 8 x 10 = 732 x 10
= 7.32 x 10
(c) 4.2 x 10 + 5.6 x 10
= 4200 x 10 + 5.6 x 10
= 4205.6 x 10
= 4.2056 x 10
5
2
6
4
-1
-4
2
2
2
5
4
4
4
6
-4
-4
-4
-1
Main Activity
Complete the adding and subtracting worksheet
a). Pacific
b). 8.43 x 10

a). 1.6715891 x 10
b). 5.0193218 x 10

a). 6.86 x 10
b). 2.02 x 10
-24
-24
7
7
7
Plenary
Key
Examples

Activity