📘 arithmetic

1. Write the given percentages as decimals. (a) 74% = $\frac{74}{100} = 0.74$

1. **Problem statement:** Estimate the answers for the following calculations and write the results with 3 significant figures. 2. **Estimation rules:** To estimate, round each num

1. The problem states that a chef poured 22 liters of water equally into 4 containers. 2. To find out how much water is in each container, we use the formula for equal distribution

1. **State the problem:** Multiply 740 by 27. 2. **Formula used:** Multiplication of two numbers $a$ and $b$ is $a \times b$.

1. **State the problem:** Multiply 740 by 72. 2. **Formula used:** Multiplication of two numbers is done by multiplying each digit and adding the results appropriately.

1. The problem is to multiply 486 by 60. 2. The formula for multiplication is $a \times b = c$, where $a$ and $b$ are the numbers to multiply, and $c$ is the product.

1. The problem is to express the fraction $\frac{1}{2}$ as a decimal. 2. To convert a fraction to a decimal, divide the numerator by the denominator.

1. **State the problem:** Calculate the result of the subtraction $5.921 - 13.2$. 2. **Recall the subtraction rule:** When subtracting a larger number from a smaller number, the re

1. **State the problem:** We need to divide 600.30 by 2570.20. 2. **Write the division expression:**

1. The problem states: The guitar price is 2240. 2. Since this is a straightforward statement of price without any additional operations or unknowns, no algebraic manipulation is n

1. **State the problem:** Calculate the value of the expression $6 \times 2 + 4$. 2. **Recall the order of operations:** According to the order of operations (PEMDAS/BODMAS), multi

1. The problem is to find the sum of 2 and 5000. 2. The formula for addition is simply $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum.

1. **State the problem:** We need to find the quotients of the division expressions: - $1248 \div 0.25$

1. The problem asks to solve the expression $1 \frac{1}{7} - \frac{3}{4}$.\n2. Convert the mixed number to an improper fraction: $1 \frac{1}{7} = \frac{8}{7}$.\n3. Find a common de

1. Masalah yang diberikan adalah menentukan total dan per porsi untuk quantity tertentu. 2. Untuk menyelesaikan masalah ini, kita gunakan rumus dasar pembagian: $$\text{Per porsi}

1. The first problem asks to convert the fraction $\frac{1}{100}$ to a decimal. 2. To convert a fraction to a decimal, divide the numerator by the denominator.

1. The problem is to calculate the product of 33 and 33. 2. We use the multiplication formula: $$a \times b$$ where $a=33$ and $b=33$.

1. The problem is to multiply 33 by 33. 2. The formula for multiplication is $a \times b$, where $a=33$ and $b=33$.

1. The problem is to solve the equation $25$. 2. Since $25$ is a constant number, it is already simplified and does not require solving.

1. **Problem Statement:** Round the number 34.26468 to various decimal places: nearest tenth, thousandth, hundredth, dollar, and cent. 2. **Rounding Rules:**

1. The problem is to understand and apply the BODMAS rule to evaluate expressions correctly. 2. BODMAS stands for Brackets, Orders (i.e., powers and roots), Division and Multiplica