Answer:
a.350
b.240
c.210
d.270
Step-by-step explanation:
We have to find the product of given number using place value.
a.\(5\times 70\)
Place of 7 in 70 =tens
\(5\times 7\; tens =35 \;tens\)
\(5\times 70=35\times 10=350\)
c.\(7\times 30\)
Place of 3 in 30 =Tens
\(7\times 3 \;tens=21 \;tens\)
\(7\times 30=21\times 10=210\)
b.\(60\times 4\)
Place of 6 in 60=Tens
\(6 \;tens\times 4=24 \;tens\)
\(60\times 4=24\times 10=240\)
d.\(90\times 3\)
\(9\;tens\times 3=27\;tens\)
\(90\times 3=27\times 10=270\)
