问题
计算题
用合理的方法计算。 | ||
|
答案
(1)765×213÷27+765×327÷27
=(213+327)×765÷27
=540×765÷27
=540÷27×765
=20×765
=15300
=(+
+
)×21÷0.28
=(21+
×21+
×21)÷0.28,
=(14+9+5)÷0.28
=28÷0.28=100
选择题
用合理的方法计算。 | ||
|
(1)765×213÷27+765×327÷27
=(213+327)×765÷27
=540×765÷27
=540÷27×765
=20×765
=15300
=(+
+
)×21÷0.28
=(21+
×21+
×21)÷0.28,
=(14+9+5)÷0.28
=28÷0.28=100