Unit 4 Multiplication Strategies (1)

Front

What is the area model in multiplication?

Back

The area model is a visual representation of multiplication where the numbers are broken down into their place values, and the products of these values are calculated and added together.

Front

What is expanded notation?

Back

Expanded notation is a way of writing numbers that shows the value of each digit. For example, 147 can be expressed as 100 + 40 + 7.

Front

What is algebraic notation in multiplication?

Back

Algebraic notation is the standard way of writing multiplication using symbols. For example, 3 x 147 represents multiplying 3 by 147.

Front

How do you solve 32 x 18 using the area model?

Back

Break down 32 into 30 + 2 and 18 into 10 + 8. Then calculate: (30 x 10) + (30 x 8) + (2 x 10) + (2 x 8) = 300 + 240 + 20 + 16 = 576.

Front

What is a partial product?

Back

A partial product is the result of multiplying a single digit of one number by the entire other number in a multiplication problem.

Front

How do you find the total number of pencils if Mrs. Jones bought 115 boxes with 8 pencils each?

Back

Multiply 115 by 8: 115 x 8 = 920 pencils.

Front

What is the first step in using the area model for 147 x 3?

Back

Decompose 147 into its place values: 100 + 40 + 7.

Front

How do you calculate 74 x 38 using expanded notation?

Back

Break down 74 into 70 + 4 and 38 into 30 + 8. Then calculate: (70 x 30) + (70 x 8) + (4 x 30) + (4 x 8) = 2100 + 560 + 120 + 32 = 2812.

Front

What is the total number of bottles if Mr. Davis buys 4 cases with 124 bottles each?

Back

Multiply 4 by 124: 4 x 124 = 496 individual bottles.

Front

What is the purpose of using the area model in multiplication?

Back

The area model helps visualize multiplication by breaking numbers into parts, making it easier to understand and calculate.