Rounding off

Estimating a number

Adding a number to itself

Adding 1 to a number

Subtracting 1 from a number

When number is 4 or 5

When number just next to rounding digit is 5,6,7,8 or 9

When number is 5,6,7,8,9 or 45

When digit just next to the the rounding digit is 5 or greater

All of the above

By adding one to the rounding digit and changing all the digits to the right of the rounding digit to zero.

By subtracting one to the rounding digit and changing all the numbers to the right of the rounding digit to zero.

By adding one to the rounding digit and changing all the digits to the right of the rounding digit to nine.

None of these

When the number is 0,1,2,3,4 or 5

When the number is 0,1,2,3 or 4

All of the above

None of the above

By changing all he digits to the right of the rounding digit to zero.

By changing all he numbers to the right of the rounding digit to one.

By changing all he numbers to the right of the rounding digit to zero.

All of the above