227k views
4 votes
Show how to multiply 6 x 298 using friendly numbers and then use properties and mental math.

User Pconley
by
7.0k points

2 Answers

2 votes
I personally don't like this common core stuff but I think I can answer
friendly numbers
you can make 298 into the 'friendly number' of 300
300 times 6=1800

the friendly number answer is 1800
mental math tells us that it is 1788
close enough
User Gemfield
by
6.7k points
4 votes

For this case we have the following multiplication:


image

We can rewrite this operation to facilitate the calculation.

We have then:


image

From here, we apply the distributive property.

We have then:


image

Rewriting we have:


image

Finally adding all the numbers we have:


image

Answer:

The value of 6 * 298 is 1788 and the calculations can be provided as follows:


6 * 298 = 6 * (200 + 90 + 8)

User Wouter Debie
by
7.4k points