五六年级数学计算题100道及答案.pdfVIP

穷则独善其身，达则兼善天下。——《孟子》

五六年级数学计算题100道及答案

7/25×4/9+7/25×5/9

=7/25×(4/9+5/9)

=7/25×1

=7/25

60×(1/12+1/15+1/4)

=60×1/12+60×1/15+60×1/4

=5+4+15

=24

(5/12-3/8)×72

=5/12×72-3/8×72

=30-27

=3

6/7-5/24÷7/12

=6/7-5/24×12/7

=12/14-5/14

=7/14

=1/2

穷则独善其身，达则兼善天下。——《孟子》

[3/4×(7/16-1/4)]÷9/13

=3/4×（7/16-4/16）×13/9

=1/4×3/16×13/3

=13/64

2/3-7/8+1/3

=(2/3+1/3)-7/8

=1-7/8

=1/8

5/6-(3/7-1/6)

=(5/6+1/6)-3/7

=1-3/7

=4/7

1-1/3-2/3

=1-(1/3+2/3)

=1-1

=0

1+3/5-1/10

=1+6/10-1/10

穷则独善其身，达则兼善天下。——《孟子》

=1+1/2

=1又1/2

3/8-12/13+5/8

=3/8+5/8-12/13

=1-12/13

=1/13

1-(1/2-3/4)

=1+3/4-2/4

=1+1/4

=5/4

1-1/2-1/4

=1/2-1/4

=2/4-1/4

=1/4

2/7-8/9+5/7

=(2/7+5/7)-8/9

=1-8/9

=1/9

穷则独善其身，达则兼善天下。——《孟子》

2-1/4-3/4

=2-(1/4+3/4)

=2-1

=1

1/2-(3/8-1/