Using shortcut method to determine 334+9.
Step I - Let's split the 9 into (10-1) to use shortcut method.
334+9 = 334+10-1=344-1
= 343
Hence, 334+9 = 343
Using shortcut method to determine 9823-999.
Using shortcut method to determine 2300÷25.
Using shortcut method to determine 892+99.
Using shortcut method to determine 128000×625.
Using shortcut method to determine 324×25.