2 digit by 2 digit multiplication Review

Front

What is 38 x 16 using the area model?

Back

The area model shows the multiplication as (30 + 8) x (10 + 6). The partial products are 300 + 180 + 80 + 48.

Front

What is the total area for 14 x 14?

Back

The total area is 196.

Front

What is 23 x 47 using the area model?

Back

The area model shows the multiplication as (20 + 3) x (40 + 7). The partial products are 800 + 140 + 120 + 21.

Front

What number goes in the pink box if the equation is 20 + ? = 30?

Back

The number is 10.

Front

What number goes in the pink box if the equation is 40 - ? = 36?

Back

The number is 4.

Front

What is the first step in multiplying two 2-digit numbers?

Back

Break each number into tens and ones.

Front

What is a partial product?

Back

A partial product is the result of multiplying a part of one number by a part of another number.

Front

How do you find the area of a rectangle?

Back

Multiply the length by the width.

Front

What is the area of a rectangle with a length of 14 and a width of 14?

Back

The area is 196.

Front

What is the formula for multiplying two 2-digit numbers?

Back

(a + b)(c + d) = ac + ad + bc + bd, where a and b are the tens and ones of the first number, and c and d are the tens and ones of the second number.