Մաթեմատիկա

Վարժություն 444

38-15-12=11                       45-12+28=61                      18:(18-16)=9

38-(15-12)=35                    45-(12+28)=5                     89-9.3=62

43+(22-16)=49                   45-(42-28)=31                    40-40:5=32

Վարժություն 447

3.9=27                   32:4=8                                   45:9=5

7.5=35                   34:3=12                                40:10=4