5/8 x 10/10 = 50/80 3/10 x 8/8 = 24/80 50/80 - 24/80 = 26/80 = 13/40
682 364 518 =6(100 000 000) + 8(10 000 000) + 2(1 000 000) + 3(100 000) + 6(10 000) + 4(1000) + 5(100) + 1(10) + 8(1)(6x100 000 000) + (8x10 000 000) + (2x1 000 000) + (3x100 000) + (6x10 000) + (4x1000) + (5x100) + (1x10) + (8x1)600 000 000 + 80 000 000 + 2 000 000 + 300 000 + 60 000 + 4000 + 500 + 10 + 8
18
84 000 108
8 - 2 3/10 = 8 - 23/10 = (80 - 23) /10 = 57/10 = 5 7/10 or 5.7 in decimal
80 000/10 = 8 000
10,000 - 8,007 = 1,993
5/8 x 10/10 = 50/80 3/10 x 8/8 = 24/80 50/80 - 24/80 = 26/80 = 13/40
682 364 518 =6(100 000 000) + 8(10 000 000) + 2(1 000 000) + 3(100 000) + 6(10 000) + 4(1000) + 5(100) + 1(10) + 8(1)(6x100 000 000) + (8x10 000 000) + (2x1 000 000) + (3x100 000) + (6x10 000) + (4x1000) + (5x100) + (1x10) + (8x1)600 000 000 + 80 000 000 + 2 000 000 + 300 000 + 60 000 + 4000 + 500 + 10 + 8
8\000
13 over 40 explanation: you must multiply 7 over 10 by 8 and 3over 8 by 10 so the denominators are the same. you end up with 56 over 80 minus 30 over 80. Your answer, 26 over 80 and you must simplify, so divide both top and bottom by two and you have you answer.
18
84 000 108
8 - 2 3/10 = 8 - 23/10 = (80 - 23) /10 = 57/10 = 5 7/10 or 5.7 in decimal
10x3+8=80-60+? 30+8=20+? 38=20+? 38-20=? 18=? The answer is 18.
10 minus 9/8 is 8 7/8
8-(-6)-10 = 8+6-10 = 4