DECIMALS 1. Grade 8 learners of Bidii Junior Secondary were given the foliowing number cards by their teacher during a mathematics lesson. ldentify the number card representing a recurring decimal.

Exercice 2: Donner l'écriture décimale, puis l'écriture scientifique de \( F \) : \[ F=3 \times 10^{-1}+2 \times 10^{2}+\frac{1}{10^{2}} \]

4. Tap A can fill an empty tank in 3 hours, while tap \( B \) can fill the same tank in 2 hours. When the tank is full, tap C can empty the tank in 5 hours. Tap \( A \) and \( C \) are opened for 4 hours and then closed. a) Determine the fraction of the tank that is still empty. ( 2 mks ) b) Find how long it would take to fill the remaining fraction of the tank if all the three taps are opened. ( 2 miss )

e diameter of the driving wheel of a bus is 140 cm . How many revolutions per minute m wheel make in order to keep a speed of 66 km per hour?

Exercice 3: En donnant les détails des calculs, mettre sous la forme d'une fraction irréductible nombre D: \( D=\frac{6^{2} \times 2^{3}}{2^{4} \times 3^{4}} \)

3) Donner l'écriture scientifique de: \( \quad E=0,0013 \times\left(10^{-2}\right)^{5} \times 5 \)