Question

37-21=	850÷100=	=	=
=	=	12×5=	4.4×1.1=
=	=	36÷3=	3-2.55=
=	=	210×10=	=
=	0.95=________%	9.5-8.7=	=
0÷=	1.12=________%	0.6+0.13=	=
2×=	=________%	0.4×0.9=	=
=	=________%	2.4÷0.3=	=
×24=	75%=	1.2-1.16=	=
9÷8=	15%=．

Answer 1

95    112    40    22
分析：根據整數、分數、小數和百分數加減乘除的計算方法進行計算．
解答：

37-21=16，	850÷100=8.5，	=，	=，
=，	=，	12×5=60，	4.4×1.1=4.84，
=，	=，	36÷3=12，	3-2.55=0.45，
=，	=6，	210×10=2100，	=1，
=，	0.95=95%，	9.5-8.7=0.8，	=，
0÷=0，	1.12=112%，	0.6+0.13=0.73，	=，
2×=，	=40%，	0.4×0.9=0.36，	=，
=，	=22%，	2.4÷0.3=8，	=，
×24=17，	75%=，	1.2-1.16=0.04，	=，
9÷8=，	15%=．

點評：口算時，注意運算符號和數據，然后再進一步計算．