Your child’s introduction to multiplication is through repeated addition. He will draw an array to visualize, or see, five groups of four stars. He will count the stars and find the total. As his understanding improves, he will skip count to find the total more efficiently. Your child will use a variety of visual models, to represent multiplication as he works toward developing multiplication fluency.
Learning to assess the reasonableness of an answer is an important mathematical skill. It’s your child’s way of seeing if she’s on the right track when problem solving. Sometimes we use rounding to estimate a solution. In third grade, your child will round whole numbers using a vertical number line and round to the nearest ten or to the nearest hundred. Let’s round seven-hundred sixty-two to the nearest hundred.
In third grade, your child will solve two-step word problems using addition, subtraction, multiplication, and division. Let’s try one: There were ten adults and five children at the movies. Each adult ticket costs $8.00 and each child ticket costs $3.00. What is the total cost of all the tickets? What is this question asking us to find?
In third grade, your child will represent fractions in pictures, number bonds, and on a number line. These drawings, or models, allow your child to develop a visual understanding of what fractions really are. Remember, the fraction one-third means that three equal parts make up one whole. How do you represent fractions on a number line? In third grade, your child will begin by placing fractions between zero and one.
When a whole is broken into equal parts each part is a fraction. Each part of this fraction is one-half. Your child will draw tape diagrams as a visual tool to help him break apart one whole. In third grade, your child will break one whole into two equal parts, three equal parts, four equal parts, six equal parts, and eight equal parts. Let’s solve a third grade word problem: Braydon had pizza for lunch.