Calculate the total weight in grams:

$1/4$ kg $+ 1/4$ kg

The bags holds $1 \mathrm{kg}$ of potatoes, $\frac{1}{4}$ part of the potatoes is filled. Find out how much potatoes need to be filled in the bag?

The bag holds $1 \mathrm{kg}$ of tomatoes, $\frac{1}{4}$ part of the tomatoes is distributed. Find out how much tomatoes will be left in the bag?

$14 \mathrm{Kg} 98 \mathrm{g}÷2 =$_____ .

The bag holds $1 \mathrm{kg}$ of potatoes, $\frac{1}{2} \mathrm{kg}$ of the potato is distributed. Find out how much $\mathrm{kg}$ of potatoes will be left in the bag?

Find the number that can replace "$?$".

$41 \mathrm{kg}+? \mathrm{kg}=42 \mathrm{kg}$