Вычислите:
- \(297+128=(297+3)+(128-3)=300+125=425\)
- \({\largeа)}\ 715-398=(715+2)-(398+2)=\phantom{0}\definecolor{dots}{RGB}{110,177,146}\color{dots}{\large.......................................}\)
- \({\largeб)}\ 25\cdot48=(25\cdot4)\cdot(48:4)=\phantom{0}\color{dots}{\large..............................................}\)
- \({\largeв)}\ 135:5=(135\cdot2):(5\cdot2)=\phantom{0}\color{dots}{\large..............................................}\)
- \({\largeг)}\ 729+299=\phantom{0}\color{dots}{\large...........................................................}\)
- \({\largeд)}\ 911-297=\phantom{0}\color{dots}{\large...........................................................}\)
- \({\largeе)}\ 36\cdot25=\phantom{0}\color{dots}{\large..............................................................}\)
- \({\largeж)}\ 270:5=\phantom{0}\color{dots}{\large.............................................................}\)
