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MULTIPLICATION BY 1-DIGIT NUMBER (WITH CARRY)

Example: Multiply 245 by . 4

Solution: (i) 5 ones × 4 = 20 ones = 2 tens 0 ones
H T O
write 0 at ones place.
1 2
carry 2 tens at tens place.
2 4 5
(ii) 4 tens × 4 = 16 tens

16 tens + 2 tens (carried) = 18 tens × 4
= 1 hundred 8 tens 9 8 0

Write 8 at tens place.
Carry 1 hundred at hundreds place.

(iii) 2 hundreds × 4 = 8 hundreds
8 hundreds + 1 hundred (carried) = 9 hundreds

Example: Multiply 935 by . 9

Solution: (i) 5 ones × 9 = 45 ones
Th H T O
= 4 tens + 5 ones
8 3 4
write 5 at ones place.
9 3 5
carry 4 tens at tens place.
× 9
(ii) 3 tens × 9 = 27 tens

27 tens + 4 tens (carried) = 31 tens 8 4 1 5

= 3 hundred + 1 ten

Write 1 at tens place.

Carry 3 hundred.

(iii) 9 hundreds × 9 = 81 hundreds

81 hundreds + 3 hundred (carried) = 84 hundreds

= 8 thousands 4 hundreds

write 4 hundreds place at hundred place

carry 8 thousands at thousands place.

935 × 9 = 8415

68
Multiplication
Mathematics-3