Teaching the 12 Times Table Up to 100

When it comes to teaching students the pattern of the three times table, a clever way is to introduce it as if it were a phone number - (369) 258-1470. This unique approach can help students remember the last digit of any multiplication of three by recognizing the repeating pattern.

In this article, we will delve into the world of long multiplication with decimals and provide a step-by-step guide on how to do it manually. We will also explore the traditional method or Standard Algorithm for multiplying numbers and lining up results according to place value.

The key to remembering the last digit of any multiplication of three is to recognize that numbers ending with nine, when multiplied by three, become a number ending with seven. This pattern repeats itself, making it easier for students to recall the last digits in both groups - 3, 6, 9, 2, 5, 8, 1, 4, 7, and 0.

Long multiplication is an essential skill for students to master as it helps them develop their problem-solving abilities and understand complex mathematical concepts. By following the steps outlined below, you can help your students become proficient in long multiplication with decimals:

Step-by-Step Guide to Long Multiplication with Decimals

1. Insert a decimal point in the product so that it has the same number of decimal places as the total from step 1.

2. Multiply the numbers using long multiplication.

3. Ignore the decimals and right-align the numbers one on top of the other as if they were integers.

4. Count the total number of decimal places contained in both the multiplicand and the multiplier.

Additional Rules for Long Multiplication with Decimals

1. Use long addition to add your number columns from right to left, carrying as you normally do for long addition.

2. When you finish multiplying, draw another answer line below your last row of answer numbers.

3. Multiply as above, but this time write your answers in a new row, shifted one digit place to the left.

4. When you've multiplied the ones digit by every digit in the top number, move to the tens digit in the bottom number. If you carried a digit, add it to the result and write the answer below the equals line.

By following these simple steps, your students will be able to master long multiplication with decimals and become more confident in their mathematical abilities.

12 times table up to 100