It takes about 100g meltblown cloth to produce a box of 50 masks, and 1kg meltblown cloth can produce 10 boxes.

A thousand tablets containing 10 tablets 100g is equivalent to producing 500 masks, and a box of 50 masks can produce10 boxes.

This is a math problem in grade two. Mathematics in grade two is mainly about learning to understand and express the essence of simple things and understand the simple connections between things. In teaching, we can combine practical problems and solve them with mathematics.