How would the number \( 1.4 \times 10^{12} \) look on a scientific calculator? A. \( 1.4 \times 12 \) B. 1412 C. 1.4 E 12 D. E 121.4

Write the number below in scientific notation. 0.00000123 A. \( 1.23 \times 10^{-6} \) B. \( 1.23 \times 10^{-5} \) C. \( 1.23 \times 10^{-7} \) D. \( 1.23 \times 10^{-8} \)

Paman menanam pohon alpukat sebangak 350 pohon. Setiap pohon membutuhkan pupuk seberat \( 0,6 \mathrm{~kg} \) setiap enam bulan. Berapa kg pupuk yang harus disediakan paman adalah .... A. 210

Which of the following numbers is equal to the value shown in scientific notation below? \( 8.8 \times 10^{7} \) A. 880,000 B. \( 88,000,000 \) C. \( 8,800,000 \) D. \( 880,000,000 \)

1.2. Between which two consecutive integers does \( \sqrt{138} \) lie? 1.3.1. Rewrite 92 and 146 as products of their prime factors. 1.3.2. Write down the LCM and HCF of 92 and 146 . 1.3.3. Divide 240 g in the ratio \( 5: 3: 4 \). 1.4. Thoriso can either walk to \( \mathrm{school} \mathrm{at} 5 \mathrm{~km} / \mathrm{h} \) or ride her bicycle at \( 15 \mathrm{~km} / \mathrm{h} \). If she rides her bicycle, it takes her 10 minutes to get to school. 1.4.1. How long will it take her if she walks to school? 1.4.2. Is this direct or indirect proportion? Give a reason for your answer. (2) 1.5. The price of petrol is increased from \( R 12,58 \) per litre to \( R 13,28 \) per lite.

\( \begin{array}{l}\text { equivalent fractions. } \\ 2\end{array} \frac{1}{2}, \frac{2}{8}, \frac{\square}{16}, \frac{\square}{32} \)