Practice30 Create account

Which rule tells us that multiplying a number by 1 leaves it unchanged?

Class 6Rules and Formulas with VariablesAlgebra

A $a \times 1 = a$
B $a \times 0 = a$
C $a + 1 = a$
D $a + 0 = 1$

Step-by-Step Solution

1 is the identity for multiplication:

25 \times 1 = 25, 1000 \times 1 = 1000

. In general

a \times 1 = a . (a + 1 = a

is never true.)

Answer: A)

a \times 1 = 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 Rules and Formulas with Variables practice questions

More Class 6 Rules and Formulas with Variables practice

A rectangle has perimeter 30 cm and length 9 cm. Using P = 2 × (l + b), what is its…A square tile has a perimeter of 52 cm. Using P = 4l, how long is each side?Which statement is true for ALL numbers p and q?This triangle has two equal sides of length a and a third side b. Which rule gives its…A rectangular garden is 3 times as long as it is wide. Its breadth is b. Which rule…