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Մաթեմտիկա

ա) 3 x (72:18)+7 x (81-70)=75

1.72:18=4

2.81-70=9

3.4×3=12

4.7×9=63

5.63+12=75

 

բ) (925-890) x 4- 2 x (600:15)=

1.925-890=62

2.600:15=40

3.62×4=248

2×40=80

 

գ) (379+621):125+(94- 31) x 8=

դ) (32 x 5) x 4+(600:100):3=

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