Page 70 - Start Up Mathematics_3

T O
Step 1: Multiply the multiplicand by the digit in
3 2
the ones place of the multiplier.
× 2 32 × 2 ones = 32 × 2 = 64

6 4

H T O
3 2 Step 2: Multiply the multiplicand by the digit in
the tens place of the multiplier.
× 1 0
32 × 1 ten = 32 × 10 = 320
3 2 0

H T O
3 2 Step 3: Add the products obtained in step 1 and
step 2.
× 1 2

6 4

+ 3 2 0

3 8 4

Amazing Maths
So, 32 × 12 = 384.
Write all digits from 1 to 9 except 8.
Multiply the number formed by each
With carrying over (with regrouping) product of 9.

12345679 × 9 = _______
Example 5: Find the product of 34 and 25.
12345679 × 18 = _______
T O 12345679 × 27 = _______

Solution: 3 4 ← Multiplicand Continue till 9 × 9.

× 2 5 ← Multiplier What do you observe?

H T O
2 3 4 Step 1: Multiply the multiplicand by the digit in
the ones place of the multiplier.
× 5
34 × 5 ones = 34 × 5 = 170
1 7 0

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