Question

if ten classes in ten school recieves 10 calculators what is the expression show your work

Answer 1

I'll assume you mean: in each of 10 schools there are 10 classes, and each class receives 10 calculators.

Step 1 — find total number of classes:
10 schools × 10 classes/school = 100 classes

Step 2 — find total calculators:
100 classes × 10 calculators/class = 1000 calculators

Expression: 10 × 10 × 10 = 1000

(If instead you meant 10 classes in one school, each getting 10 calculators, the expression would be 10 × 10 = 100.)