P6Problem-solving
Before-and-After Ratio Problems: How to Tell What Stays the Same
Choose the unchanged quantity, total or difference before calculating.
· 10 min read
Mathweave articles
See why a method works, compare the tricky cases, then try a fresh question yourself.
P6Problem-solving
Choose the unchanged quantity, total or difference before calculating.
· 10 min read
P5–P6Problem-solving
See the relationship in a problem and choose a first move.
· 9 min read
P3–P6Problem-solving
Two methods, one problem. Understand what each replacement changes.
· 7 min read
P4–P6Problem-solving
Almost the same words can change which whole you need.
· 6 min read