5÷1/3 = 15;1/2÷1/3 =1又1/2;
2/7×3/9 ÷2/7 =63÷2=31.5
21/25÷42= 1/50=0.02;4/5×3/4 = 3/5;
8.7×0.2=1.74;4×0.25=1; 1/7×14=2 2/3÷5/6=4/5; 1.25×8=10;3/5÷5/8=0.015
6/7×3/2=1又2/7; 6×8.8=52.8;
4/11÷4= 1/11;4/9×3/8=1/6;5/3÷5=1/3
0÷8/3=0;2/7×2 =4/7;41/12×4=13又2/3
六年级学生以小数(分数)及较为复杂的整数运算为主。
(1)12一4/7x14十2/3÷(1一1/3)
=12一8十2/3÷2/3
=12一8十1
=5
(2)27x8十54x3一81÷9
=27x(8十2x3)一9
=27x14一9
=9x(3x14一1)
=9x41=369