Simplify and express the result as a rational numbers in its lowest form.
(i) 3.125÷0.125+0.50-0.225
(ii 0.4×0.04×0.005/0.1×10×0.001 -1/2+1/2
(iii) 0.144÷1.2/0.016÷0.02 +7/5-21/8
please give me right answer with solutions in make copy please
Answers
Answer:
1)25.375 (or) 25375/1000
2)-999983/2
3)7451/40
Step-by-step explanation:
1ans)
3125
_________ =25/8
1000
0125
_____ = 1/8
1000
25/8 * 8 (by reciprocal of division into multiplication)
= 25 (by cancellation of denominator 8 to nominator 8)
= 25 +0.50-0.225
=25+0.375
=25.375
=25375/1000
2ans)
0.4*0.04=0.016
0.016*0.005=0.000080
0.000080/0.1=000008/1000000
_______________
1/10
=> 80/1000000 *10 (reciprocal)
=8/10000
=8/10000 * 10
=8/1000
=8/1000*0.001=8/1000000
=8/1000000-1/2
=-49992+1/2
=-999983/2
3ans]
0.144/1.2
=144/1000
_________
12/10
=144/1000*10/12
=12/100
=3/25
=3/25
_____
0.016
=15/4
15/4
_____
0.02
=15/4*100/2
=375/2
=375/2+7/5
=1889/10 - 21/8
=15112-210
__________
80
=14902/80
=7450/40
Answer:
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