Practice problem
Write 30.230.230.2 in expanded notation.
30+230+230+2
3×10+2×0.13 \times 10+2 \times 0.13×10+2×0.1
30+2×130+ 2 \times 130+2×1
3×1+2×0.13 \times 1 +2 \times 0.13×1+2×0.1
Type a concept, like “slope” or “photosynthesis”.
