Understanding how our ten number system works enables students to see interesting and useful patterns and relationships in these math activities. These patterns allow students to develop more efficient mental math strategies when multiplying by multiples of 10 or 100. Students will also review rounding and apply this skill to larger numbers - up to 100,000’s place.
This worksheet will challenge your third graders to round numbers and then them. Students will answer multiple choice questions by rounding up or rounding down numbers in the problems provided.
Using Estimation: Knowing What’s Too Big and Too Small
Adding and subtracting large numbers can sometimes be difficult. Estimating is an easy way to figure out if your answer is close, or if you need to try again.
Use the worksheet 2017 Census Data: Working for a Living 3 to help your fourth or fifth graders evaluate a bar graph with numbers represented as decimals. They will use the graph to compare and add the decimal numbers.