4. Abigail has 42 erasers. She gives 18 to 4 Avery. She gives some to Mackenzie. Abigail has 9 erasers left. How many erasers did she give to MacKenzie?

4.Представьте произведе \( \left(4,6 \cdot 10^{4}\right) \cdot\left(2,5 \cdot 10^{-5}\right) \)

10) A loaded truck travels 14 km in \( 25 \mathrm{minutes} \). If the speed remains the same, how far can it travel in 5 hours?

3.1. Simplify each of the following ratios: 3.1.1. \( 4: 28: 16 \) 3.1.2. \( 6: 1.25: 2.5 \) 3.1.3. \( 3.6: 27: 13.5 \) 3.2. Distribute \( R 24000.00 \) in the ratio 2:1:5.

2 Round R269,90 to the nearest R100 rand.

1.1.1. A prime number between 5 and 16... A. 17 B. 7 C. 20 D. 21