📘 arithmetic

1. **Problem Statement:** Round the number 1.8708 to two decimal places. 2. **Formula and Rule:** To round a number to two decimal places, look at the third decimal digit.

1. The problem is to round off the number 0.01449 to 2 decimal places. 2. The rule for rounding to 2 decimal places is to look at the third decimal digit.

1. The problem is to round off the number 0.1449 to a certain decimal place. 2. The general rule for rounding is: look at the digit immediately to the right of the place you want t

1. **Stating the problem:** We have pairs of U-shaped figures divided into six sections each, with numbers in each section. The goal is to find the number in the middle circle of e

1. The problem is to understand or interpret the number 72. 2. Since 72 is a number, we can explore its properties such as factors, prime factorization, and divisibility.

1. The problem is to evaluate the expression or value for the number 36. 2. Since 36 is a constant number, no further calculation is needed.

1. Problem 6: Given 4 points on a line, no three collinear, how many segments are formed by pairing points? Formula: Number of segments formed by $n$ points is $\binom{n}{2} = \fra

1. The problem is to multiply 9 by the mixed number $7\frac{1}{12}$.\n\n2. First, convert the mixed number to an improper fraction. The mixed number $7\frac{1}{12}$ means $7 + \fra

1. The problem is to find the result of dividing 45 by 15. 2. The division formula is $\frac{a}{b}$ where $a$ is the dividend and $b$ is the divisor.

1. **State the problem:** We need to find the result of dividing 34 by 2. 2. **Formula used:** Division is the operation of splitting a number into equal parts. The formula is:

1. **State the problem:** We need to find the result of dividing 36 by 9. 2. **Recall the division operation:** Division is splitting a number into equal parts. The formula is $$\t

1. **State the problem:** We need to find the result of dividing 34 by 17. 2. **Formula used:** Division is the operation of determining how many times one number is contained with

1. The problem is to understand the number 4 and its properties. 2. The number 4 is a positive integer and an even number.

1. The problem is to find the value of 9. 2. The number 9 is a constant and its value is exactly 9.

1. **State the problem:** Calculate the sum of $2 + 5$. 2. **Formula used:** Addition of two numbers is given by $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum.

1. **Stating the problem:** We need to check divisibility of given numbers by 3, 6, and 9, and write a pair of factors if divisible.

1. **Check divisibility for each number:** - Divisible by 3: Sum of digits divisible by 3.

1. **State the problem:** Calculate the sum of $-70$ and $-90$. 2. **Formula and rules:** When adding two negative numbers, add their absolute values and keep the negative sign.

1. **State the problem:** Calculate the value of the expression $-2250 + 140 - 90$. 2. **Understand the operation:** This is a simple arithmetic expression involving addition and s

1. **State the problem:** Calculate the product of 300000 and 0.50. 2. **Formula used:** Multiplication of a number by a decimal is straightforward: $$a \times b$$ where $a=300000$

1. **Problem Statement:** We need to find the multiplication table for 2. 2. **Formula:** The multiplication table for a number $n$ is given by $n \times i$ where $i$ ranges from 1