按照1元兑换0.856美元计算,小华的爸爸拿1000元人民币能兑换多少美元?
2÷3= 12÷30= 15÷7= 28÷54= 42÷14=
竖式计算并验算0.736÷1.6 4.4×0.25=
直接写出答案.1÷0.01= 4.3﹣2.6= 5﹣1.42= 3.95+0.5= 2.46÷0.6= 0.8×12.5=2.5×0.4= 35÷70= 10﹣0.9= 5×8÷12.5= 8÷0.8÷8×0.8= 0.2+0.8×0.3=
0.70÷35= 5﹣0.512= 5144×12= (4.2+34)×2×0=3.7+5= 300×0.3%= 415×14= 3×112+3×12=
列坚式计算.(打*的要验算)*(1)5.778÷5.4 (2)8.02×3.5.