Question

Вычислите деление,представив делимое в виде двух удобных слагаемых. 84:3= 56:4= 85:5= 57:3= 128:4= 255:5= 186:3= 215:5=

Answer 1

84:3 = 60:3+24:3=20+8=28
56:4 = 40:4+16:4=10+4=14
85:5 = 50:5+35:5 = 10+7=17
57:3 = 30:3+27:3=10+9=19
128:4 = 120:4+8:4 = 30+2 = 32
255:5 = 250:5 +5:5 = 51
186:3 = 180:3 +6:3=60+2=62
215:5 = 200:5+15:5 = 40+3=43

Answer 2

84:3 = (80 + 4):3 = 80:3 + 4:3 = 26 + 1.33 = 27.33 56:4 = (56 - 4):4 = 52:4 - 4:4 = 13 - 1 = 12 85:5 = (80 + 5):5 = 80:5 + 5:5 = 16 + 1 = 17 57:3 = (54 + 3):3 = 54:3 + 3:3 = 18 + 1 = 19 128:4 = (128 - 4):4 = 124:4 - 4:4 = 31 - 1 = 30 255:5 = (250 + 5):5 = 250:5 + 5:5 = 50 + 1 = 51 186:3 = (180 + 6):3 = 180:3 + 6:3 = 60 + 2 = 62 215:5 = (210 + 5):5 = 210:5 + 5:5 = 42 + 1 = 43