Objective

By the end of this lesson, you will be able to solve arithmetic problems involving addition, subtraction, multiplication, and division.

Materials and Prep

• Pen or pencil
• Blank paper

No prior knowledge is required for this lesson.

Activities

1. Activity 1: Addition Challenge

   Start by solving the following addition problems:

   • 12 + 5
   • 27 + 9
   • 48 + 13

   Once you have found the answers, create your own addition problems for your family members to solve.

2. Activity 2: Subtraction Race

   Time yourself as you solve the following subtraction problems:

   • 35 - 17
   • 62 - 28
   • 89 - 43

   Challenge yourself to solve them as quickly and accurately as possible.

3. Activity 3: Multiplication Mystery

   Using the numbers 1 to 9, write down all the multiplication facts you know. Then, choose one of the facts and create a mystery problem for your family to solve. Provide clues to help them figure out the correct answer.

4. Activity 4: Division Challenge

   Divide the following numbers:

   • 72 ÷ 8
   • 63 ÷ 9
   • 96 ÷ 6

   Once you have found the answers, challenge yourself to solve division problems with larger numbers.

Fourth Grade Talking Points

• "Arithmetic is the branch of mathematics that deals with numbers and basic operations like addition, subtraction, multiplication, and division."
• "Addition is combining two or more numbers to find the total."
• "Subtraction is taking away one number from another to find the difference."
• "Multiplication is a shortcut for repeated addition. For example, 3 x 4 means adding 3 four times: 3 + 3 + 3 + 3 = 12."
• "Division is the opposite of multiplication. It is splitting a number into equal parts or groups."
• "Remember, when solving arithmetic problems, always follow the order of operations: parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right)."