How many times greater is \( 9 \times 10^{100} \) than \( 3 \times 10^{-10} \) ?

4) Schrijf de getallen als machten van 10 en bereken \( \frac{0,0017 \times 85000000}{0,00068: 0,0000004}= \)

5. a) Puja Limbu did 8 out of 10 math problems and Raju Lama did 11 out of 15 similar math problems. Express the number of problems solved by each of them in fractions and identify who did better performance.

Calculer: \( (-3) \div(-2) ; 8 \div(-4) \quad ; \quad \frac{(-72}{9} \)

Puja Limbu did 8 out of 10 math problems and Raju Lama did 11 out of 15 similar math problems. Express the number of problems solved by each of them in fractions and identify who did better performance.

(4. Calculà y. si es posible. expresá el resultado como número mixto \( \frac{11}{10}+\frac{5}{2}= \) \( \frac{7}{9}+\frac{2}{3}= \) \( \frac{19}{5}-\frac{7}{3}= \) \( \frac{2}{5}+\frac{3}{2}= \)