How to do the fourth question on page 67 of Shanxi education primary school mathematics review guidance training? - Training Enrollment Network

How to do the fourth question on page 67 of Shanxi education primary school mathematics review guidance training?

1.3/ 16+8/ 13-﹙ 1 1/ 16-5/ 13﹚

=3/ 16+8/ 13- 1 1/ 16+5/ 13

=8/ 13+5/ 13- 1 1/ 16+3/ 16

= 1-8/ 16

= 1/2

2.﹙4/3+2/5﹚×20+5/ 12

=4/3×20+2/5×20+5/ 12

=80/3+8+5/ 12

=35 and112

3.9.25×9.9+0.925

=9.25×9.9+9.25×0. 1

=9.25×﹙9.9+0. 1﹚

=9.25× 10

=92.5

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