Number and Operations
Problem Solving, Addition and Subtraction with Decimals Level 4 Vol. 1 – In this free number and operation lesson, your children will help Omar check his receipts and solve addition and subtraction problems with decimals. Students first, estimate if the receipt total is correct or incorrect using mental math. If the receipt has errors, they may use a calculator to make the corrections. This is a not only a foundational skill, but also a fun way to practice mental math and real-world calculations.