100道脱式简便计算 脱式计算,能简算的要简算.①2013×0.25+2013×0.75②1.25×32×0.25③12×( 5 6 + 1
脱式计算,能简算的要简算.①2013×0.25+2013×0.75②1.25×32×0.25③12×( 5 6 + 1
脱式计算,能简算的要简算.①2013×0.25+2013×0.75②1.25×32×0.25③12×( 5 6 + 1, 脱式计算,能简算的要简算.①2013×0.25+2013×0.75 &n...
①2013×0.25+2013×0.75=2013×(0.25+0.75)
=2013×1
=2013;②1.25×32×0.25
=1.25×(8×4)×0.25
=(1.25×8)×(4×0.25)
=10×1
=10;
③12×(
5 6+
1 2-
1 3)
=12×
+12×
1 2-12×
1 3)
=10+6-4
=16-4
=12;
④
2 3+(
5 6-
3 4)÷
3 8=
2 3+
1 12÷
3 8=
2 3+
2 9=
8 9.
脱式计算,能简算的要简算,1.25*0.25*61*16
1.25×0.25×61×16
=﹙1.25×8﹚×﹙0.25×2﹚×61
=10×0.5×61
=305
脱式计算,能简算的要简算.(1)0.6+6×32×0.25(2) ( 4 5 + 1 4 ) ÷ 7
(1)0.6+6×32×0.25,=0.6+(6×8)×(4×0.25),
=0.6+48×1,
=0.6+48,
=48.6;(2) ( 4 5
+
1 4) ÷
7 3-
1 4,
=
×
3 7-
1 4,
=
-
1 4,
=
;
(3)36×(
7 9+
1 4-
5 6),
=36×
+36×
1 4-36×
5 6,
=28+9-30,
=7;
(4)
8 9×[
7 8-(
7 16+
1 8)],
=
×[
7 8-
7 16+
1 8],
=
×[
7 8+
1 8-
7 16],
=
×[1-
7 16],
=
×
9 16,
=
.
脱式计算.(能简算的要简算)(1)1.25×8.37×0.8 (2)(9-2.35)×0.64 (3)0.25×32×...
(1)1.25×8.37×0.8
=1.25×0.8×8.37,
=1×8.37,
=8.37;
(2)(9-2.35)×0.64
=6.65×0.64,
=4.256;
(3)0.25×32×12.5
=(0.25×4)×(8×1.25),
=1×10,
=10;
(4)0.15×1999+0.15
=(1+1999)×0.15,
=2000×0.15,
=300;
(5)0.37×1.4-0.4×0.37
=(1.4-0.4)×0.37,
=1×0.37,
=0.37;
(6)8.7×9.9
=8.7×(10-0.1),
=8.7×10-8.7×0.1,
=87-0.87,
=86.13.
脱式计算(能简算的要简算)1.25×0.25×3.2×1.71.3-3.79+
(1)1.25×0.25×3.2×1.7,
=1.25×0.25×(0.8×4)×1.7,
=(1.25×0.8)×(0.25×4)×1.7,
=1×1×1.7,
=1.7;
(2)1.3-3.79+9.7-6.21,
=1.3+9.7-3.79-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1;
(3)6×
1 4+13÷4-11×25%,
=6×
+13×
1 4-11×
1 4,
=(6+13-11)×
,
=8×
,
=2.
脱式计算(能简算的要简算)0.75×4×0.25×4 9.6+9.9×99 1
①0.75×4×0.25×4,=0.75×(4×0.25)×4,
=0.75×1×4,
=3;②9.6+9.9×99,
=9.6+980.1,
=989.7;

③15.58÷8.2-0.72,
=1.9-0.72,
=1.18;
④4.536÷0.8÷14,
=5.67÷14,
=0.405;
⑤2.8×3.6+1.4×2.8,
=(3.6+1.4)×2.8,
=5×2.8,
=14;
⑥6.3×10.1,
=6.3×(10+0.1),
=6.3×10+6.3×0.1,
=63+0.63,
=63.63.
0.75十0.25x4.4脱式计算,能简算的要简算
0.75十0.25x4.4=0.75+0.25x4+0.25x0.4=0.75+1+0.1=1.85
或者0.75十0.25x4.4=0.25x3十0.25x4.4=0.25x(3+4.4)=0.25x7.4=1.85
不太记得脱式计算是什么意思了,其实利用好25x4=100也是蛮简单的
0.25×32×1.25能简算的要简算用递等式计算
0.25×32×1.25
=0.25×4×(8×1.25)
=1×10
=10
直接拆开计算