Monday, February 20, 2017

Դասարանական աշխատան․մաթեմատիկա




















3.
1)45+12=57
2)45-30=15
3)18*12=216     2+1+6=9
4)60+54=114
5)-12+(-45)=-33
6)1/30*1/12=1/360
7)1/18+1/12=5/36
8) 6
9)18
10)18/1=18
11)36
12)9
13)18*12=360               18*45=810           810-360=450
18) 9
19)180
20)6

21)7

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