六年级数学简便计算易错题.doc
2
－(12
2
5
－3
3
－4
5
5 1
12 5 7 +2 5 ) 17.15－ 8.47－ 1.53 17 6 4 6 0.75+8 +4 +0.375
5 －(2 1
－ 1
3 4 4 4 4 4
4.25 －3 ) 5 ＋ 95 +995 +9995 +99995 25×（ 37×8）25× 32× 125
6 6 4
1 5 3
125× 8.8 0.125× 0.25× 32 400÷ 125÷ 8 25×3 ÷ 2 ×
10
3 5 3 1 3 11 ＋7 5 7 4
318 × 7213÷ 318 34 × (58 － 5.375)( 12 18 + 24 )× 72 45× (9 +15－ 0.6)
2 3 5 1
3.4×99＋ 3.4 187.7× 11－ 187.7 (
15 ＋11 )× 15× 11 0.625× 0.5+8 +2 × 62.5%
?
7 1
＋5 2 7 1
＋ 57.125 ×
1
－ 0.5 2.42 ÷
3
+4.58 ×
1
－4÷ 3
÷2×43 ×
9 5 11 9 8 2 2 4 1 3
3
1 1
7
1 7
7 ÷ 11 2 ×
5
22× 4
+25× 75%-7× 0.75
0.25× 63.5－ 4 × 132
6
15
×2.5 —22 ×415
9
5 +
11
9
7 14 5 4
7 3
1 7
11 × 419 +519 ÷ 17
+
11
897× 8 － 37.5%+104× 0.375
3.5× 1 4 +1.25 × 210 +3.8÷
4
5
3 1 × 8.25+12.5%
18×9＋ 7×9＋9 1
×58＋ 1
×41＋
1
0.125× + 4 8
25
16
25
16
16
8
8
8
3 x
+ 1
x =2.25
2x - 1.6=5.4
20%x +
3
=4
1 x
+ 2
x
4
2
4
5
3
=26
20 - 15% x = 5
3 x ÷
1 =18
3 - 2x =
3
x - 75%x =
5
4
6
5
2