How do you add single digit numbers

2 answers:

6 0

Hi there!

This question isn't too hard.

To add with single digit numbers you just need to count.

You can regroup too, depending on what numbers you're using. I can give you some examples if you'd like!

1 + 2 = 3 because you need to just count. If I have one apple and you have two, count to see how many apples we have altogether. In this case, we have three apples.

What about 9 + 9? You would regroup because our answer is bigger than ten. If I have nine pennies and you have nine pennies, and we put them all together you'd have 18. Just count like before ^

Hope this helps!

Solnce55 [7]3 years ago

5 0

Often with regrouping of 2 numbers then counting them once all together

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The length of each side of a square is 6 feet more than the length of a side of a regular Octagon. The perimeter of the square i

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Answer:

square: 12 ft sides
octagon: 6 ft sides

Step-by-step explanation:

This problem can be worked in your head.

If the perimeters of the square and regular octagon are the same, the side length of the 4-sided square must be the same as the length of 2 sides of the 8-sided octagon. Since the side of the square is 6 ft more than the side of the octagon, each side of the octagon must be 6 ft, and each side of the square must be 12 ft.

We can let s represent the side length of the octagon. Then we have ...

8s = perimeter of octagon

4(s +6) = perimeter of square

These are equal, so ...

4(s +6) = 8s

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6 = s . . . . . . . . . . subtract s

The octagon has 6-ft sides; the square has 12-ft sides.

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