Question

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Write the addition sentence shown on the number line.

A chart representing a mathematical problem =
a 4+3=7
b) 3+4=7
c) 5+2=7
d) 2+5=7

Answer 1

When adding two positive numbers, the answer has a positive sign. When adding two negative numbers, the answer has a negative sign. When adding numbers with opposite signs, subtract the smaller number and use the sign of the larger number. In subtraction, change the sign of the subtracted number and follow the addition rules. The order of addition does not affect the result.

Step-by-step explanation:

When two positive numbers add, the answer has a +ve sign, e.g., 3+2 = 5.

When two negative numbers add, the answer has −ve sign, e.g., -4 + (-2) = -6.

When two numbers having opposite signs add, subtract the smaller number from the larger number, and the answer has the sign of the larger number. For example, -5 +3 = -2.

In subtraction, change the sign of the subtracted number and then follow the addition rules. For example, subtract 3 from 5:

1. Identify the equation to use. Write it down!!!
2. Ensure that all the values are in the correct units and fill them in your equation.
3. Calculate the answer and check your units.

A+B=B+ A.

This is true for the addition of ordinary numbers as well-you get the same result whether you add 2 + 3 or 3 + 2, for example.