Back to Subsets: Proper, Improper, and the Subsets Formula — Problem 3 · Task Set 2

Exercises: Subsets: Proper, Improper, and the Subsets Formula

Work through each section in order. Show your work where indicated. Use the symbols ⊆ (subset or equal), ⊂ (proper subset), and ∅ (empty set) as needed.

Grade 7·21 problems·~30 min·Uganda NCDC Primary 7 Mathematics·lesson·sets-02

Work through problems with immediate feedback

Fluency Practice

$Oval A inside oval B; oval C with element 5 sitting outside oval B$

Look at the diagram. Set $A = \{1, 2\}$ is drawn inside set $B = \{1, 2, 3, 4\}$ , while $C = \{1, 5\}$ has one element outside $B$ . How many elements of $C$ lie OUTSIDE $B$ ?