IN.4.1. Number Sense
Students understand the place value of whole numbers and decimals to two decimal places and how whole numbers and decimals relate to simple fractions.
4.1.3 Round whole numbers up to 10,000 to the nearest ten, hundred, and thousand.
Students solve problems involving addition, subtraction, multiplication, and division of whole numbers and understand the relationships among these operations. They extend their use and understanding of whole numbers to the addition and subtraction of simple fractions and decimals.
4.2.11 Know and use strategies for estimating results of any whole-number computations.
4.2.12 Use mental arithmetic to add or subtract numbers rounded to hundreds or thousands.
IN.4.7. Problem Solving
Students use strategies, skills, and concepts in finding and communicating solutions to problems.
4.7.7 Know and use appropriate methods for estimating results of whole-number computations.