What does column mean in math?

Answer 1

Column , to add/subtract vertically.

e.g.

123

+45

---

This is addition in column form . Start by going to the right hand column (The UNITS).; 3 + 5 = 8

'8' goes in the units column answer below the answer line.

Hence

123

+45

---

 8 

We then move to the next column to the left (The TENS); 2 + 4 = 6

'6' goes in the tens column answer below the answer line

Hence

123

+45

---

68

We then move to the next column to the left again (The HUNDREDS); 1 + 0 = 1

'1' goes in the hundreds column answer below the answer line

Hence

123

+45

---

168

=== The answer!!!!!

Subtraction

145

-23

---

122

--- The answer

Again you subtract (take away) column by column , starting from the right hand column. e.g. 5 - 3 = 2

et.seq.,

Personally I find the mechanical method of addition/subtraction far easier than the modern 'line number' system. In pre-calculator days , this would be the method used.

The column names are from the right

1 =Units

10 = tens

100 =- hundreds

1000 = thousands

10,000 = tens of thousands

100,000 hundreds of thousands

1,000,000 = millions

1,000,000,000 = billions

1,000,000,000,000 = trillions.

et seq

Answer 2

Ask your teacher stupid. Sorry but heres a chant to remeber rows and COLUMNS. Columns go up and down rows go left to right.

Answer 3

. Columns go up and down rows go left to right.