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## Class 4 math (India)

### Course: Class 4 math (India)>Unit 3

Lesson 2: Division: place value and area

# Division using place value

Sal uses an understanding of place value to divide 5600÷8 and 846÷2.

## Want to join the conversation?

• How Sal could divide before multiply. According to PEMDAS multiplying come first?
• PEMDAS, Parenthases, exponents, multiplication, division, addition, subtraction.

This order is correct, but you sometimes also see BEDMAS, brackets, exponents... and so on. This is because +- can be done in either order, the same is also true for */
• This is off topic but can you divide by 0?
• This is a very good question, and the answer is important to understand.

Division by 0 is not a well-defined operation. There are two situations to consider when dividing by 0. If you take calculus later on, you will need to be able to tell the difference between these two situations.

Situation 1: If we divide 0 by 0, then this is the same as asking what number times 0 is 0. Any number times 0 is 0, so 0/0 can have any value. So 0/0 is called indeterminate.

Situation 2: Let x be any nonzero number (a number other than 0). If we divide x by 0, this is the same as asking what number times 0 is x. No number times 0 can be the nonzero number x, so x/0 cannot have a value. So x/0 is called undefined. Also x/0 can be thought of as positively or negatively infinite, because if we divide the nonzero number x by a number that is very near 0, the answer would be very far from 0.

(Note well: dividing a number by 0 is generally not the same as dividing 0 by a number. Zero divided by any nonzero number is just 0.)
• me doing math...😶😐😕😑 🤕(brain damage) Vs. me not doing math....🙂😀😄😁😁😁😁😁😁😁😁😁😁😁🐕🐕🐕🐕🐕🐕🐕🐕
• so if its missing numbers in divison ? divided by 2=8 we can do 8 times 2 that is 16 and 16 is the missing number can it be true.
• to split anything equally so everyone's happy :)
• I do not understand this
• This might be off topic, but when do we learn algebra?
• I have seen variables and algebraic expressions introduced as early as 6th grade.
• what if you still don't get the video and the problem it is asking and there is no one there to help you and you cant go look for someone to help you?