Question

Write the doubles plus one fact for 7+7.

Answer 1

Answer:

7 + 8 = 7 + 7 + 1.

Step-by-step explanation:

We know that, 'double plus one facts' is used to make the addition of numbers easy.

For e.g. we have 8 + 9 = 17. This addition can also be done as 8 + 8 + 1 = 17 i.e. we write first term twice and add 1 to get the result.

Hence, we give the name to this type of addition as 'double plus one'.

Now, we have to use this fact for 7 + 7.

So, we consider 7 + 8 = 15.

Therefore, 7 + 8 can be written as 7 + 7 + 1

Hence, the double plus one facts for 7 + 7 is 7 + 8 = 7 + 7 + 1.

Answer 2

The double plus one facts for $7 + 7$ is $\boxed{15}$

Further explanation:

Always use the PEDMAS rule to solve the grouping of multiplication, addition, subtraction and division.

Here, P is parenthesis, E is exponents, M is multiplication, D is division, A is addition and S is subtraction.

Given:

The double plus one fact of $7 + 7$

Explanation:

The make addition easy we can use the ‘double plus one facts’.

In the equation we have one operation that is addition.

Consider $7 + 8 = 15.$

Wehave to use the fact of double plus $7 + 7.$

Eight can be expressed as the sum of seven and one.

$8 = 7 + 1$

Therefore, 7+8 can be written as follows,

$\begin{aligned}7 + 8 &= 15\\7 + \left( {7 + 1} \right) &= 15\\7 + 7 + 1 &= 15\\\end{aligned}$

Hence, the double plus one facts for $7 + 7$ is $\boxed{15}$

Learn more:

1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.
2. Learn more about equation of circle brainly.com/question/1506955.
3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Number System

Keywords: Double plus, one fact, fact double plus fact, 7+7, addition of two numbers.