Subtracting using the column method

Maths

For the following equation: 5762 - 4031 = ... which is the most appropriate estimate?

For the following equation: 8371 - 6124 = ... which is the most appropriate estimate?

In the following equation: 8624 - 3711 = ... which column requires regrouping?

In the following equation: 6744 - 2481 = ... which column requires regrouping?

Forgotten to regroup one ten for ten ones so that she can take 8 away from 4.

Mrs Crane has made a mistake in the following calculation. What has she done wrong?

My equation is 4586 + 4815 = ... which is the best estimate to make before I calculate my answer?

My equation is 5592 + 1564 = ... which is the best estimate to make before I calculate my answer?

From the following equations, which equation requires regrouping in TWO columns?

From the following equations, which equation requires regrouping in the tens and hundreds column?

One of the digits in this column addition is missing, what is the missing digit?