75 рублей.....................
4.989,4.988,4.897,5.000,5.001,5.002.;2.358,2.357,2.356,2.360,2.361,2.362;9.998,9.997,9.996,10.000,10.001,10.002.
1) 16,53+(19,8+2,19)=16,53+21,99=38,52
2) (2 2/3+5 1/4)+3 2/5=7 (8+3)/12+3 2/5=7 11/12+3 2/5=10 (55+24)/60=10 79/60= 11 19/60
1) 16,53+(-19,8+2,19)=16,53-17,61=-1,08
2) (2 2/3-5 1/4)+3 2/5=-3(8-3)/12+3 2/5= -3 5/12+3 2/5= (-25+24)/60= -1/60
1 ц 40 кг + 6 ц 30 кг =(1 ц+6ц)+(40 кг+30кг)=7 ц+70кг= 7 ц 30кг