Question

3 Multiply6 multiply9=9 multiply6 multiply

Answer 1

Answer:

As you review how to multiply by 6 to 9, remember this:

Every multiplication equation has a twin.

7 x 3 is equal to 3 x 7.

They're both equal to 21.

So, if you forget 7 x 3, just remember it's twin.

And you'll know the answer!

But let's look at some tricks that can make multiplication easier for you.

Multiplying by 6

There's no special rule for multiplying by 6.

You just have to remember this.

When you multiply an even number by 6, the last digit of the answer is the same as the number that's being multiplied.

Here's a list of even numbers multiplied by 6:

6 x 2 = 12

6 x 4 = 24

6 x 6 = 36

6 x 8 = 48

6 x 10 = 60

6 x 12 = 72

Did you notice the last digits?

Here's the multiplication table for 6 so you can see the other numbers.

multiplication table for 6

Secret trick: think of multiplying by 6 as multiplying by 5 and adding one more of the same number.

Take a look:

6 x 7 = ?

We get the answer by doing this:

5 x 7 = 35

35 + 7 = 42

Wasn't that easy?

Multiplying by 7

Just like multiplying by 6, there are no special rules for 7.

So it's best to just be familiar with the multiplication table.

multiplication table for 7

Practice multiplying by 7 as often as you can.

Tip: the second digit goes down by 3 each time.

Before you know it, you'll have multiplying by 7 memorized.

Multiply by 8

There's a trick that you can do when multiplying by 8.

You can double the number that's being multiplied by 8, three times.

Let's say you want to multiply