📘 arithmetic

1. **State the problem:** We need to fill the blanks in the two decimal numbers \(_ . 7 _\) and \(_ . _ 0\) using the digits 4, 5, 6, and 7, so that the numbers fall between 6 and

1. Problem statement. Three girls each paid $100$ for a motel room, for a total of $300$.

1. **State the problem:** A bakery uses 30 kg of an ingredient per day. We want to find out how many 2.5 kg units they use per day. 2. **Set up the division:** To find the number o

1. The problem states that a box has 12 rows of apples, but we need more information to find the total number of apples, such as how many apples are in each row. 2. Without the num

1. Let's solve arithmetic expressions from lines 15 to 39. 15.

1. The problem involves performing arithmetic calculations based on the given exercises. 2. First, solve the multiplication problems:

1. Calculate $8.5 \times 6$. Multiply the two numbers:

1. **State the problem:** We need to calculate the division of 107.69 by 0.062. 2. **Write the division expression:** $$\frac{107.69}{0.062}$$

1. The problem is to divide 7.6 by 100 and understand how to do it. 2. Dividing a number by 100 means moving the decimal point two places to the left because 100 has two zeros.

1. We are asked to find the sum of 1 and 7. 2. Addition is the process of combining two numbers to get their total.

1. Let's start by understanding the problem: we want to find out what 22 plus 22 equals. 2. Think of 22 as a group of 22 things, like 22 apples.

1. We are asked to subtract the mixed numbers $5\,\frac{5}{6}$ and $2\,\frac{3}{8}$.\n 2. Convert both mixed numbers to improper fractions for easier subtraction.\n

1. **Stating the problem:** Simplify the expression $2 \frac{5}{6} - \frac{1}{10}$. 2. **Convert the mixed number to an improper fraction:**

1. We are asked to find the value of $2 \frac{1}{4} - \frac{1}{6}$.\n2. Convert the mixed number $2 \frac{1}{4}$ to an improper fraction. Since $2 = \frac{8}{4}$, we have $2 \frac{

1. **State the problem:** We want to find the difference between $1 \frac{1}{4}$ and $\frac{1}{5}$. 2. **Convert mixed number to improper fraction:**

1. **Stating the problem:** We need to find the sum of $5 + 6$. 2. **Performing the addition:** Adding the two numbers, we have

1. We are given the expression $5+1-2$. 2. We evaluate the addition first: $5+1=6$.

1. **Stating the problem:** We want to learn how to add a one-digit number to a two-digit number. 2. **Example:** Suppose we add $7$ (one-digit) to $34$ (two-digit).

1. **State the problem:** We need to estimate the values of two expressions by rounding each number to 1 significant figure and then performing the calculations. 2. **Part (a):** C

1. The problem is to find the result of multiplying 39.3 by 2.1 and then subtracting 18.5. 2. First, multiply 39.3 by 2.1:

1. Problem (6): Calculate the mass of 30 bags each weighing 15 kg. To find the total mass, multiply the number of bags by the mass of one bag: