Question

find the product.
7×5 =
12×6 =

use the array to write one multiplication problem and one division problem it represents.

for cindys birthday she got 5 gifts from her parents and 6 gifts from her friends. the next day her grandmother gave her 4 more presents. if this happens every year, how many gifts will cindy receive in 6 years?
jorges teacher asked him to make a poster for his research project. the area of the poster must be 6 square feet. what might be the length and width of the poster?

Explanation:

Cindy's Gift Problem

Step1: Calculate gifts per year

First, find the total gifts Cindy gets in one year. She gets 5 from parents, 6 from friends, and 4 from grandmother. So, \( 5 + 6 + 4 = 15 \) gifts per year.

Step2: Calculate gifts in 6 years

To find the total gifts in 6 years, multiply the gifts per year by 6. So, \( 15\times6 = 90 \).

The area of a rectangle (poster, assumed rectangular) is \( \text{Area}=\text{length}\times\text{width} \). We need two positive numbers whose product is 6. Possible pairs: \( 1\times6 = 6 \), \( 2\times3 = 6 \), \( 3\times2 = 6 \), \( 6\times1 = 6 \).

The array has 4 rows and 5 columns (or 5 columns and 4 rows) of 'x's. Multiplication: number of rows × number of columns = total 'x's. Division: total 'x's ÷ number of rows = number of columns (or total ÷ columns = rows).

Answer:

90

Jorge's Poster Problem