Question

Find the following using the number line – 6 + 7 + 7 =?

Answer 1

Hint: Arithmetic operations of numbers can be better explained on a number line. To begin with, one must know to locate numbers on a number line. Zero is the middle point of a number line. All (natural numbers) positive numbers occupy the right side of the zero whereas negative numbers occupy the left side of zero on the number line.

Complete step-by-step answer:
A number line is a pictorial representation of numbers on a straight line. It’s a reference for comparing and ordering numbers. It can be used to represent any real number that includes every whole number and natural numbers. Just to recollect, the whole number is a set of numbers which include all counting numbers (1, 2, 3, 4, 5…….) and zero, whereas the natural number is the set of all counting numbers i.e., 1, 2, 3, 4, 5...
Here, in the given sum to evaluate the first number is -6, second and third numbers are +7, hence we need to start solving using the given first number i.e., -6 as represented on the number line, as we need to add +7 from -6 on the number line, hence by adding +7 we get 1, then next we need to add again +7 we get 8 as the answer which is as shown:

Note: On a number line, when we add two positive numbers, the result will always be a positive number. Hence, on adding positive numbers direction of movement will always be to the right side. As we can see , the representation of the number line is based on the evaluation of the given sum, hence we can evaluate the given numbers based on the arithmetic operators i.e., adding, subtracting, multiplying and dividing the number as per the operator assigned.