In National 4 Maths multiply a number given to two decimal places by a single-digit whole number and by multiples of 10, 100 and 1000.

Learn how to multiply 2-digit numbers mentally with this step-by-step guide for kids. Discover simple techniques to boost calculation speed, improve mental math skills, and build confidence for ...

In National 4 Maths multiply a number given to two decimal places by a single-digit whole number and by multiples of 10, 100 and 1000.

Then take the two numbers you want to multiply—in the case of the above image, 7 and 8—and put together the corresponding fingers (as shown in the picture to the right).

For example, to multiply four-digit numbers, instead of needing 4 2 = 16 multiplications, Karatsuba's method gets away with only nine. When using his method, twice as many digits means only three ...

Other scenarios to apply this Sutra include when two numbers which last two digits when added equal to 100 and the last three digits when added equal to 1000.

Mathematicians have reportedly discovered a new way of multiplying two numbers together. The new technique is for really large numbers, and if it passes a peer-review, could be the fastest ...