You should know how to write simple math

It shows how many times a number must be multiplied by itself.

We say:

Two to the power of three equals eight.
or
Two, raised to the power of three equals eight.
or
Two, raised to the third power equals eight.

But in IELTS, we sometimes need to report these:

100 m² : One hundred square meters
1 km² : One square kilometer.
70 cm³ : Seventy cubic centimeters.
680 ft³ : Six hundred and eighty cubic feet. 

Fractions

It shows some number(s) are divided by other number(s).

We say:
seven–ninth
or
seven out of nine
or
seven divided by nine

But in IELTS, we sometimes need to report these: 

¼: One-fourth
(one quarter / a quarter / one out of four)

½ : a half
(or one-half)

¾: Three-fourth
(three-quarters / three out of four)

1½ : one and a half 

Decimals

It shows numbers smaller than one.

We say:

Seven point zero, six, one
or
Seven and zero, six, one

We write:

Seven point sixty-one thousandth
or
Seven and sixty-one thousandth

Poor handwriting leads to disastrous reasult

All things considered, we believe the print-style handwriting is more suitable for IELTS for three reasons:

1. It is easier and faster to write.
2. You can find your errors faster while you proofread and edit your work.
3. It is less time-consuming to learn how to write the letters correctly. 

Look at the picture below, follow the arrows and practice correct English letter tracing.

And here are the animated versions:

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