Lesson 8-2 Arrays and the Expanded Algorithm

Front

What is an array in mathematics?

Back

An array is a systematic arrangement of objects, usually in rows and columns, used to represent multiplication and division.

Front

How do you calculate the area of a rectangle using an array model?

Back

To calculate the area, multiply the number of rows by the number of columns in the array.

Front

What is the expanded algorithm in multiplication?

Back

The expanded algorithm breaks down numbers into their place values and multiplies each part separately before adding the results.

Front

What is the product of 52 x 46 using the area model?

Back

2,392

Front

If you have 30, 300, 56, and 72, which number is the largest?

Back

300

Front

What number is represented by the grey square in the multiplication problem?

Back

2,080

Front

Fill in the missing number: 80, __, 16, 8. What is the missing number?

Back

160

Front

What is the product of 31 x 79?

Back

2,449

Front

What does the term 'product' mean in mathematics?

Back

The product is the result of multiplying two or more numbers together.

Front

What is the place value of the digit 4 in the number 46?

Back

The place value of 4 in 46 is 'tens'.