670×30= ____________
24×62= ____________
59×102= ____________
301×199= ____________
29×99= ____________
252÷42= ____________
345÷15= ____________
783÷9= ____________
408÷8 ____________
540÷60= ____________
624÷26= ____________
544÷16= ____________
144÷18= ____________
1170÷26= ____________
194÷12= ____________
72×81+104= ____________
706×24-72= ____________
504×19-19= ____________
376×25+258= ____________
25×4×478= ____________
65×201= ____________
199×31= ____________
75×200= ____________
解方程：5x-12+25=63,X= ____________
若÷62=12，则（×2）÷X=12，则X= ____________
若÷68=12，则÷34= ____________
解方程:X÷104=24,X= ____________