37.8k views
0 votes
3 x 10, then 5 x 10, then 7 x 10, then tell if it is going positive or negative

User Gio
by
7.7k points

1 Answer

2 votes

Answer:

3 x 10 = 30

5 x 10 = 50

7 x 10 =70

30 is positive, 50 is positive, 70 is positive

Explanation:

When multiplying 3 by 10, imagine 10 being adding by 10 three times.

10 + 10 + 10

Then add

30

If you know even numbers they go:

2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,etc.

These steps also work for 5 x 10 and 7 x 10.

Imagine 10 being added by 10 five times.

10 + 10 + 10 + 10 + 10 = 50.

Imagine 10 being added by 10 seven times.

10 + 10 + 10 + 10 + 10 + 10 + 10 = 70.

User Awilkinson
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories