| What will be covered in Unit 7? Write numbers, written in scientific notation, in standard and number-and-word notation. Use "less than", "greater than", and "equal" signs to compare positive and negative numbers. Identify number sentences, and tell whether number sentences are true or false. Explain why expressions are not number sentences. Match number stories with appropriate number models. Insert parentheses to make number stories true. Solve account balance problems and draw pictures using counters to show account balances. Add and subtract positive and negative numbers. |