Wednesday, February 22, 2017

21.02.2017, 22.02.2017 դասարանական աշխատանք․ մաթեմատիկա



21.02.2017

26.
3x+8=65
65-8=57
57:3=19
19*3=57+8=65

27.
(x-13)*2=44
44:2=22
22+13=35


28.
X+X*3=92
92:4=23

29.
X:4-7=32
32+7=39
39*4=156

30.(x+23)*3=250-34
250-34=216
216:3=72
72-23=49

31.(x-35)*2-3=x
2x-70-3=x
x=73

32.101+98+x=247
101+98=199
247-199=48

22.02.2017

101.
1) (24+42)*5=66*5=330
2) 462:66=7
3) 13*24= 312         42*9=378           312+378=690
4) 25*24=600                   25*42=1050            600+1050=1650

102.
1) 18-12=6         6*13=78
2) 18-12=6         6*14=84         6*9=54                 84+54=138
3) 28*6=168          168+168=336
4) 18*14=252           252:12=21



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