(1)(35+25)×15=______×______+______×______(2)12×13+12×13=______×(______+______)(3)(110+15)×5=______+______(4)100×2399=(99+1)×2399=______+______=______.-数学

题文

(1)(
3
5
+
2
5
)×15=______×______+______×______
(2)
1
2
×
1
3
+
1
2
×
1
3
=______×(______+______)
(3)(
1
10
+
1
5
)×5=______+______
(4)100×
23
99
=(99+1)×
23
99
=______+______=______.
题型:填空题  难度:偏易

答案


(1)(
3
5
+
2
5
)×15,
=
3
5
×15+
2
5
×15,
=9+6,
=15;

(2)
1
2
×
1
3
+
1
2
×
1
3

=
1
3
×(
1
2
+
1
2
),
=
1
3
×1,
=
1
3


(3)(
1
10
+
1
5
)×5,
=
1
10
×5+
1
5
×5,
=
1
用简便方法计算125×32640÷5÷8653-98944+102.-数学
用简便方法计算125×32640÷
计算下面各题,能简算的要简算.①0.45+0.45÷0.9×1.8②9511-534-2.25③25×104④0.625×4.3+58×4.7+62.5%⑤(110+16)×10×6⑥38×20-38×3-38.-数学
计算下面各题,能简算的要简
用简便方法计算.135×50×23.6+8.59+6.4312×4+188×4.-数学
用简便方法计算.135×50×2
直接写出得数:100%-1=40×5%=2.1÷70%=4÷25%=2.5×100%=1÷14=12×(12+13)=10%+10%=-数学
直接写出得数:100%-1=40×5
脱式计算。(能简算的要简算)(1)21+210+2100+21000+210000+2100000(2)(3)-六年级数学
脱式计算。(能简算的要简算