Numbers: connect the ideas

Exercise and reference answers

Matching pairs

1. Left

   √50

   Right

   Irrational

2. Left

   7 in47026 has value

   Right

   7000

3. Left

   √121 + ∛64

   Right

   15

4. Left

   −9−(−3×4)

   Right

   3

5. Left

   Least n:12n square,18n cube

   Right

   12

6. Left

   x÷(−6)=7; find x

   Right

   −42

Instructions

n is a positive integer; use perfect squares/cubes.