Give feedback
Maths
Summary
When multiplying and dividing by one or multiplying by zero, there are special rules to follow.
No matter what the number you want to multiply or divide by one is, the answer is always the same as the number that you started with.
What is $739\times1$?
The answer is the number that you started with.
$\underline{739}$
Note: You can think of this as $739$ lots of one, or one lot of $739$.
What is $652\div1$?
Again, the answer is the number that you started with.
$\underline{652}$
Note: This is like saying share $652$ into one part.
Multiplying by zero is just as easy - no matter what number you multiply it by, the answer is always 0.
What is $43\times0$?
The answer is always zero.
$\underline{0}$
Note: Unlike with one, you CANNOT divide by zero. This is an important rule in Maths.
FAQs
Question: Can I divide by 0?
Answer: You CANNOT divide by zero. This is an important rule in maths.
Question: What do I get when I multiply by 0?
Answer: When you multiply by zero, no matter what number you multiply it by, the answer is always 0.
Question: What do I get when I multiply by 1?
Answer: No matter what the number you want to multiply by one, the answer is always the same as the number that you started with.
Question: What do I get when I divide by 1?
Answer: No matter what the number you want to divide by one, the answer is always the same as the number that you started with.
Theory
Exercises
Your data protection
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners who may combine it with other information that you’ve provided them or that they’ve collected from your use of their services. By clicking on either "Accept cookies" or "Necessary cookies only", you agree to this (read more in our Privacy Policy). Privacy Policy