Practice30 Create account

Which rule says that the order in which two numbers are added does not matter?

Class 7Formulas and Rules from PatternsAlgebra

A $a \times (b + c) = a \times b + a \times c$
B $a + 0 = a$
C $a - b = b - a$
D $a + b = b + a$

Step-by-Step Solution

a + b = b + a is the commutative rule for addition, true for every pair of numbers. (a − b = b − a is false, e.g. 5 − 2 ≠ 2 − 5.)

Answer: D)

a + b = b + a

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Formulas and Rules from Patterns practice questions

More Class 7 Formulas and Rules from Patterns practice

Which rule shows the distributive property for numbers a, b and c?Dots are arranged in squares, as shown. Which rule gives the number of dots in Shape n?A taxi in Kolkata charges ₹40 to start plus ₹12 for every kilometre. Which formula gives…Which expression is NOT equal to the perimeter of a rectangle with length l and breadth b?A car travels s km every hour. Which expression gives the distance it covers in t hours?