Author note — to cover

Multiplying and dividing in standard form without a calculator via the index laws, renormalising fronts like 40 x 10 to the 7; how-many-times-larger comparisons in astronomy and cell contexts. Addition lives on the sibling page; calculator methods live on calculator-standard-form. Both tiers. (N9)

Introduction

—coming soon—

Practice and continue

Practice

Multiplying and dividing in standard form

Products, quotients and how-many-times-bigger comparisons.

Next lesson

Adding and subtracting in standard form

Matching the powers of ten before combining, then renormalising the result.