patricia wrote:

At the start of my tuition, I always write 'helpful' notes next to each type within the test that is left for homework. For type K bracket maths, I write the following:

Middle number has been made using the numbers either side.

Same rule must apply for all 3 sets.

Sometimes 1 operation. Sometimes 2.

Second operation can be:

1] + - x / [divide sign!] the same number.

2] doubling/halving

3] + - x / [divide sign] the number on the left or right of the middle number.

Whilst teaching, I always say:

If the number in the middle is bigger than the 2 either side then your 1st operation is **probably** adding or multiplying.

If the number in the middle is smaller that at least one of the numbers either side, then your 1st operation is **probably **subtracting or dividing.

I always emphasise the word **probably**, because there are times when this rule will not work, they are not to panic, if it doesn't work, thats fine, just try the other 2 operations.

Patricia

Excellent ..