Moving the decimal over by counting the 0's and moving over and if u move it past the the last number you add a decimal and put a 0 if there is not enough to numbers always move to the right
If you would like to know what was the original price of the shirt, you can calculate this using the following steps:
30% + 100% = 130%
130% of $22.40 = 130% * 22.40 = 130/100 * 22.40 = $29.12
The original price of the shirt was $29.12.
Antoine sleep 8 hours in a day
well first the complement I 90-19=71
and supplement is 180-19=161
Answer:
Mostly correct
For Q3, you are doing great, you remembered that negative numbers can happen if the exponent is an odd number.
For Q4, I think you were confused with the fractions,
4(i)

4(ii) is also wrong but I'll let you try to fix it yourself following what I given you for 4(i). You should get 1/64
Hope this helps!