Sophia Learning
Sophia: Significant Figures Addition & Subtraction
A guided lesson explaining how to add and subtract numbers expressing the answer with the appropriate number of significant digits.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.