2 Fill in the correct relationship sign ( < , > or = ): 0,72 ______ 0,720

Step 1: Fill in the correct relationship sign for $0,72$ and $0,720$ (from question 3.2). The number $0,720$ is equivalent to $0,72$ because trailing zeros after the decimal point do not change the value of the number. $0,72 = 0,720$

Step 2: Calculate $84,637 - 46,254$ using the column method (from question 3.3). Align the numbers by their decimal points and subtract column by column, starting from the right.

  84.637
- 46.254
--------
  38.383

$84,637 - 46,254 = 38,383$

Step 3: Calculate $64,8 \div 6$ using long division (from question 3.4). Divide $64,8$ by $6$:

• $6$ goes into $6$ once ($1 \times 6 = 6$).
• Bring down $4$. $6$ goes into $4$ zero times ($0 \times 6 = 0$).
• Place the decimal point in the quotient.
• Bring down $8$. $6$ goes into $48$ eight times ($8 \times 6 = 48$).

$64,8 \div 6 = 10,8$

Step 4: Calculate Thabo's earnings (from question 3.5).

• 3.5.1 How much does he earn per day? Thabo earns R $47,50$ per hour and works $8$ hours per day. $Daily earnings = Hourly rate \times Hours per day$ $Daily earnings = R 47,50 \times 8 = R 380,00$ Thabo earns $\boxed{R 380,00}$ per day.

• 3.5.2 How much does he earn per week? Thabo works $5$ days per week. $Weekly earnings = Daily earnings \times Days per week$ $Weekly earnings = R 380,00 \times 5 = R 1900,00$ Thabo earns $\boxed{R 1900,00}$ per week.

Step 5: Calculate the exponents (from question 4.1).

• 4.1.1 Calculate $4^3$. $4^3 = 4 \times 4 \times 4 = 16 \times 4 = 64$ $4^3 = 64$

• 4.1.2 Calculate $\sqrt[3]{125} + \sqrt{49}$. First, find the cube root of $125$: $5 \times 5 \times 5 = 125$, so $\sqrt[3]{125} = 5$. Next, find the square root of $49$: $7 \times 7 = 49$, so $\sqrt{49} = 7$. Now, add the results: $\sqrt[3]{125} + \sqrt{49} = 5 + 7 = 12$ $\sqrt[3]{125} + \sqrt{49} = 12$

Step 6: Write in exponential form (from question 4.2). The expression is $7 \times 7 \times 7 \times 5 \times 5$. The number $7$ is multiplied by itself $3$ times, so it can be written as $7^3$. The number $5$ is multiplied by itself $2$ times, so it can be written as $5^2$. $7 \times 7 \times 7 \times 5 \times 5 = 7^3 \times 5^2$

Step 7: Write the numbers in descending order (from question 5.1.1). The given numbers are $-5; +6; -3; +9; 0; -7$. Descending order means from largest to smallest. The largest number is $+9$. The next largest is $+6$. Then $0$. Then the negative numbers, from largest (closest to zero) to smallest (furthest from zero): $-3$, then $-5$, then $-7$. $+9; +6; 0; -3; -5; -7$

3 done, 2 left today. You're making progress.