📘 arithmetic

1. State the problem: Compute $91387 + 2998,74$. 2. Formula and rules: Addition is commutative and associative, so $a+b=b+a$ and when adding decimals you must align decimal places

1. The problem is to multiply the numbers 291387 and 299874. 2. The multiplication formula is straightforward: $$a \times b$$ where $a=291387$ and $b=299874$.

1. **State the problem:** Calculate the sum of 4723.30 and 5337. 2. **Formula used:** Addition of two numbers is done by summing their values digit by digit.

1. **State the problem:** Calculate the sum of 4967.83 and 7489. 2. **Formula used:** Addition of decimal numbers is done by aligning the decimal points and adding corresponding di

1. **State the problem:** Calculate the value of $7 \times \left(1 \frac{5}{7}\right) + 2$ and compare it to $9 + 5$. 2. **Convert the mixed number to an improper fraction:**

1. **State the problem:** We need to divide 472 by 11. 2. **Write the division expression:**

1. The problem is to understand the number 15. 2. 15 is a positive integer, a whole number greater than zero.

1. The problem is to find the sum of 15 and 18. 2. The formula for addition is $a + b = c$, where $a$ and $b$ are the numbers to add, and $c$ is the result.

1. The problem is to convert a number or expression into decimal form. 2. Decimal form means expressing a number using base 10 digits, including digits after the decimal point if n

1. The problem asks to find $3 \frac{2}{5}$ of 35. 2. First, convert the mixed number $3 \frac{2}{5}$ to an improper fraction.

1. The problem is to calculate the number 4. 2. Since 4 is already a number, no calculation is needed.

1. 問題陳述： (a) 用中國文字寫出右圖算柱所表示的數。

1. **Stating the problem:** Convert the given fractions and decimals to equivalent forms and understand the shaded parts in the rectangle and square. 2. **Fraction to decimal conve

1. সমস্যাটি হলো: ১৮৭৯ × ৩৯৮৫ ভাগ করা। 2. প্রথমে গুণফল বের করি: $$1879 \times 3985$$

1. The problem is to express the fraction $\frac{43}{10}$ as a mixed number and as a decimal. 2. A mixed number consists of a whole number and a proper fraction. To convert an impr

1. **State the problem:** We need to divide 58001 by 907. 2. **Write the division expression:**

1. **State the problem:** Multiply the mixed number $2\ 3/5$ by $16$. 2. **Convert the mixed number to an improper fraction:**

1. The problem is to evaluate the expression $8$. 2. Since $8$ is a single number and not an operation, the value is simply $8$.

1. **State the problem:** We are asked to work out the following calculations involving decimals and fractions. 2. **Calculate each part:**

1. The problem is to round the number 6.196 to 2 decimal places. 2. The rule for rounding to 2 decimal places is to look at the third decimal digit.

1. **State the problem:** We need to find the value of 5 times the sum of 2 and 4 added to 7 times the sum of 3 and 8. 2. **Write the expression:** The problem translates to the ex