分数计算题(100分)
一、分数与整数相乘。(每题1分,共24分)
56112
×4= 26× = ×5= ×6 = 121315131599
×8 = 12× = 42× = ×11 = 416284461323
×15 = 24× = ×7= ×20= 54821425 ×15= 718 ×12= 16×920 = 1415 ×30= 1011 ×121= 914 ×21 = 579 ×7= 16927 ×54= 11×22 =
二、分数和分数相乘。(每题1分,共18分)
25 ×34 = 67 ×7588 = 9 ×15 = 121525 ×16 = 45 ×910 = 23 ×1516 = 49 ×2716 = 142520315 ×21 = 27 ×8 = 611 ×2215 = 1727 ×4568 = 1933 ×1138 = 1234 ×1736 = 326
13 ×37
=
三、分数乘、加、减混合。(每题2分,共16分)716 ×(5063 -27 ) 45 ×1516 ×14 536 ×4 +1
914 -59 ×2735 1-1819 ×3845 6515 ×(5-13 )
10 17×13
51 = ×3
11 = 14
15 ×20= 911 ×7
15 = 78 ×5
21 = 79 ×1835 = 817 ×17
20 = 23 +512 ×415 1991 ×7+813
四、分数乘、加、减简便运算。(每题2分,共42分)
137511917
× ×5 ( + )×24 × ×14 15268121418
1520192551 × × × × ×22× 162151036332
(546 -9 )×36
67 ×12×712
3758 ×12 +12 ×38
5356 ×57
183 ×(53 -6 ) (13+ 99× 9798 815 ×437 ×16 517 ×7749 +9 ×17 517 +517 ×16 19 )×913 913 -718 ×913 911 ×97×119 1225 ×15-7
25 ×15 2325 ×1617 +1625 ×1
17666613 ×12+13