Math EOG NC 4th Grade part 1

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Examples: 2, 3, 5, 7.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors. Examples: 4, 6, 8, 9.

Front

How do you find the total number of items when they are equally distributed?

Back

To find the total number of items, multiply the number of items in each group by the number of groups. Example: If there are 5 cows in 3 fields, total cows = 5 x 3 = 15.

Front

What is the sum of two fractions?

Back

Front

How do you double a recipe?

Back

To double a recipe, multiply each ingredient by 2. Example: If the recipe calls for 1/4 cup of raisins, doubling it means you need 1/2 cup.

Front

What is the formula to find the number of boxes needed for items?

Back

To find the number of boxes needed, divide the total number of items by the capacity of each box. Example: 128 pencils ÷ 9 pencils/box = 14 boxes.

Front

What is the total length of two objects?

Back

To find the total length, add the lengths of the two objects together. Example: If one object is 19 4/5 inches and another is 10 4/5 inches, total length = 30 3/5 inches.

Front

What is a fraction?

Back

Front

How do you identify prime and composite numbers in a list?

Back

To identify prime and composite numbers, check each number: Prime numbers have only two divisors (1 and itself), while composite numbers have more than two.

Front

What is the process of adding mixed numbers?

Back

To add mixed numbers, first add the whole numbers, then add the fractions. If the fraction sum is improper, convert it to a mixed number.