How to multiply 24 x 435x 13 without a calculator
do you mean the normal longhand method of multiplication, or some sort of mental trick to make it easier?
If the former, then just google your question and you will see various explanations of multiplication by hand.
If the latter, better minds than mine will have to help. None of the shortcuts I have learned seem to apply here.
the latter
To multiply numbers without a calculator, you can use a method called long multiplication. Here are the steps to multiply 24 × 435 × 13:
1. Begin by multiplying the rightmost digit of the second number (13) with the first number (24) and write down the result.
4 × 13 = 52
2. Multiply the next digit of the second number (3) with the first number (24) and write it down, shifted one place to the left.
3 × 24 = 72 (write it down as 720)
3. Now, multiply the first number (24) with the leftmost digit of the second number (4) and write it down, shifted two places to the left.
24 × 4 = 96 (write it down as 960)
4. Add up the three results obtained in steps 1, 2, and 3.
52 + 720 + 960 = 1732
So, the result of multiplying 24 × 435 × 13 is 1732.