五年级脱式计算简便运算的题 脱式计算下面各题,能简算的要简算 9750÷25+75; (2.32+1.8)×6.5; 101×7.8; 5 8
脱式计算下面各题,能简算的要简算 9750÷25+75; (2.32+1.8)×6.5; 101×7.8; 5 8
脱式计算下面各题,能简算的要简算 9750÷25+75; (2.32+1.8)×6.5; 101×7.8; 5 8
(1)9750÷25+75=390+75,
=465;(2)(2.32+1.8)×6.5
=4.12×6.5,
=26.78;
(3)101×7.8
=100×7.8+7.8,
=780+7.8,
=787.8;
(4)
5 8×
8 15+
3 4÷
1 4=
1 3+3,
= 3
;
(5)
1 3÷[
3 4-(
1 18+
5 12)]
=
÷[
3 4-
17 36],
=
÷
10 36,
=
.
计算下面各题能简算的要简算459÷25÷4脱式计算
459÷25÷4
=459÷(25×4)
=459÷100
=4.59
脱式计算下面各题,能简算的要简算:75×5÷75×5 (80+4)×125 ...
①75×5÷75×5
=375÷75×5
=5×5
=25
②(80+4)×125
=80×125+4×125
=10000+500
=10500
③96+480÷96
=96+5
=101
(1)9750÷25+75 (2)(2.32+1.8)×6.5 (3)101×7.8 (4) 5 8 × 8 15
(1)9750÷25+75,=390+75,
=465;(2)(2.32+1.8)×6.5,
=4.12×6.5,
=26.78;
(3)101×7.8,
=(100+1)×7.8,
=100×7.8+1×7.8,
=780+7.8,
=787.8;
(4)
5 8×
8 15+
3 4÷
1 4,
=
+3,
=3
;
(5)
1 3÷ [
3 4-(
1 18+
5 12)],
=
÷ [
3 4-
17 36],
=
÷
5 18,
=
.
脱式计算下面各题,能简算的要简算:75×5÷75×5(80+4)×12596+480÷96
①75×5÷75×5=375÷75×5
=5×5
=25②(80+4)×125
=80×125+4×125
=10000+500
=10500
③96+480÷96
=96+5
=101
计算下面各题,能简算的要简算.(1)25×1.25×32(2)7.8×3.4+7 4 5 +7.8×5 3 5
(1)25×1.25×32,=25×1.25×8×4,
=(25×4)×(1.25×8),
=100×10,
=1000;(2)7.8×3.4+7 4 5
+7.8×5
3 5,
=7.8×3.4+7.8×1+7.8×5.6,
=7.8×(3.4+1+5.6),
=7.8×10,
=78;
(3)(
2 7+
1 5)×7×5,
=(
+
1 5)×(7×5),
=
×(7×5)+
1 5×(7×5),
=[(
×7)×5]+[(
1 5×5)×7],
=[2×5]+[1×7],
=10+7,
=17;
(4)(
4 5+
1 4)÷
7 3+
7 10,
=
÷
7 3+
7 10,
=
×
3 7+
7 10,
=
+
7 10,
=
;
(5)5400-2940÷28×27,
=5400-105×27,
=5400-2835,
=2565;
(6)
7 15÷[(
5 7-
3 14)÷
3 4],
=
÷[
1 2÷
3 4],
=
÷
2 3,
=
.
计算下面各题(能简算的要简算)25×8×4×125 &nbs...
(1)25×8×4×125
=25×4×(8×125)
=100×1000
=100000;
(2)201×41
=(200+1)×41
=200×41+1×41
=8200+41
=8241;
(3)38×99+38
=38×(99+1)
=38×100
=3800;
(4)425+21×(12+28)
=425+21×40
=425+840
=1265;
(5)15×[120-(42+36)]
=15×[120-78]
=15×42
=630.
计算下面各题,能简算的要简算:(1)2.95*101-2.95
:(1)2.95*101-2.95=2.95*100=295
(2)4.6*0.35+4.6*0.65=4.6*1=4.6
(3)6.3*99+6.3=6.3*100=630
(4)16.12*99+16.12=16.12*100=1612
(5)5.2*0.9+0.95=6.2*0.9
(6)8.4*0.26+0.74
(7)56.5*99+56.5=56.5*100=5650
(8)5.5*17.3+2.7*5.5=20*5.5=110
(9)31.7-0.5*0.7-1.65=31.7-0.35-1.65=31.7-2=29.7
(10)0.8*(3.2-2.99÷2.3)
(11)7.09-10.8-0.8*7.09
计算下面各题,能简算的要简算 6 5 × 3 8 + 5 8 ÷ 5 6
(1) 6 5 × 3 8+
5 8÷
5 6,
=
×
3 8+
5 8×
6 5,
=

6 5
×(
3 8+
5 8),
=
×1,
=
;
(2)
7 16×[
5 16+(
9 16-
1 4÷
1 2)],
=
×[
5 16+(
9 16-
1 2)],
=
×[
5 16+
9 16-
1 2],
=
×[
7 8-
1 2],
=
×
3 8,
=
;
(3)
17 8-0.35-1.65,
=
-(0.35+1.65),
=
-2,
=
;
(4)(11-5)÷
5 6×
6 13,
=6÷
×
6 13,
=
×
6 13,
=
.
计算下面各题,能简算的要简算.7.8+4.56+2.2 1.25×17×...
(1)7.8+4.56+2.2
=(7.8+2.2)+4.56
=10+4.56
=14.56;
(2)1.25×17×8
=1.25×8×17
=10×17
=170;
(3)3.25÷0.25÷0.4
=3.25÷(0.25×0.4)
=3.25÷0.1
=32.5;
(4)4.2×0.7+5.8×0.7
=(4.2+5.8)×0.7
=10×0.7
=7.