Найди пропущенные числа, используя шкалу:
а)
1000 = 800 + ...;
1000 = 400 + ...;
1000 = 700 + ...;
1000 = 600 + ...;
1000 = 500 + ...;
1000 = 100 + ... .
б)
1000 = 970 + ...;
1000 = 950 + ...;
1000 = 980 + ...;
1000 = 910 + ...;
1000 = 940 + ...;
1000 = 920 + ... .
в)
1000 = 998 + ...;
1000 = 993 + ...;
1000 = 999 + ...;
1000 = 995 + ...;
1000 = 997 + ...;
1000 = 996 + ... .
1000 = 800 + 200;
1000 = 400 + 600;
1000 = 700 + 300;
1000 = 600 + 400;
1000 = 500 + 500;
1000 = 100 + 900.
1000 = 970 + 30;
1000 = 950 + 50;
1000 = 980 + 20;
1000 = 910 + 70;
1000 = 940 + 60;
1000 = 920 + 80.
1000 = 998 + 2;
1000 = 993 + 7;
1000 = 999 + 1;
1000 = 995 + 5;
1000 = 997 + 3;
1000 = 996 + 4.