口算45×15=18÷0.06=0.76+0.38=1÷25%=3a×4a=0.42-0.32=15÷513=15×3÷15×3=您觉得这8道题中哪到题最容易出错，为什么？．

Question

口算

(4)/(5)×(1)/(5)=	18÷0.06=	0.76+0.38=	1÷25%=
3a×4a=	0.42-0.32=	15÷(5)/(13)=	(1)/(5)×3÷(1)/(5)×3=

您觉得这8道题中哪到题最容易出错，为什么？___．

(4)/(5)×(1)/(5)=	18÷0.06=	0.76+0.38=	1÷25%=
3a×4a=	0.42-0.32=	15÷(5)/(13)=	(1)/(5)×3÷(1)/(5)×3=

(4)/(5)×(1)/(5)=18÷0.06=0.76+0.38=1÷25%=3a×4a=0.4²-0.3²=15÷(5)/(13)=(1)/(5)×3÷(1)/(5)×3=(4)/(5)×(1)/(5)=18÷0.06=0.76+0.38=1÷25%=(4)/(5)×(1)/(5)=(4)/(5)×(1)/(5)=(4)/(5)454455(1)/(5)=(1)/(5)15115518÷0.06=0.76+0.38=1÷25%=3a×4a=0.4²-0.3²=15÷(5)/(13)=(1)/(5)×3÷(1)/(5)×3=3a×4a=0.4²-0.3²=²²15÷(5)/(13)=(5)/(13)=(5)/(13)513551313(1)/(5)×3÷(1)/(5)×3=(1)/(5)×3÷(1)/(5)×3=(1)/(5)151155(1)/(5)×3=(1)/(5)151155

Answer 1

(4)/(5)×(1)/(5)=(4)/(25)	18÷0.06=300	0.76+0.38=1.14	1÷25%=4
3a×4a=12a2	0.42-0.32=0.07	15÷(5)/(13)=39	(1)/(5)×3÷(1)/(5)×3=9

(4)/(5)×(1)/(5)=(4)/(25)18÷0.06=3000.76+0.38=1.141÷25%=43a×4a=12a²0.4²-0.3²=0.0715÷(5)/(13)=39(1)/(5)×3÷(1)/(5)×3=9(4)/(5)×(1)/(5)=(4)/(25)18÷0.06=3000.76+0.38=1.141÷25%=4(4)/(5)×(1)/(5)=(4)/(25)(4)/(5)×(1)/(5)=(4)/(25)(4)/(5)45444555×(1)/(5)=(4)/(25)(1)/(5)15111555=(4)/(25)(4)/(25)42544425252518÷0.06=30018÷0.06=3000.76+0.38=1.140.76+0.38=1.141÷25%=41÷25%=43a×4a=12a²0.4²-0.3²=0.0715÷(5)/(13)=39(1)/(5)×3÷(1)/(5)×3=93a×4a=12a²3a×4a=12a²20.4²-0.3²=0.070.4²2-0.3²2=0.0715÷(5)/(13)=3915÷(5)/(13)=39(5)/(13)513555131313=39(1)/(5)×3÷(1)/(5)×3=9(1)/(5)×3÷(1)/(5)×3=9(1)/(5)15111555×3÷(1)/(5)×3=9(1)/(5)15111555×3=9最后一题容易出错，错用运算定律．错算出结果是1．