Show:
Division
Multiplication
Addition
Subtraction
Bidmas
100

24/10

2.4

100

12x3

36

100

23+5

28

100

13-7

6

100

(23+78)x(23-12)

1111

200

36/2

18

200

20x500

10000

200

true or false?

156+324 estimated is 480


false 

estimated: 156________200 and 324_______300

so added would be 500


200

79-53

26

200

12x3+23

59

300

2684/20

134.2

300

123x51

6273

300

123+456

579

300

42-76

-34

300

true or false 

24x3+15/3=77

true

400

2100/7

300

400

789.21x5

3946.05

400

579+789

1368

400

481.2-322.5

158.7

400

(9+11)x(50-9x5)

100

500

8895/2

4447.5

500

4258.23x15

63873.45

500

24+24+32+32

112

500

-48-56

-104

500

where would the brackets go:

there is only one pair of brackets

63/7x51-26=225

63/7x(51-26)=225

brackets go either side of 51 and 26