Online worksheet ยท 3 of 4
Keep an exact root when needed - Online practice 3
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
Read before answering
Work with sqrt(48), where sqrt denotes the non-negative square root. Factor 48 as 16 x 3; the first factor is a square. An exact root need not be a terminating decimal. Compare also sqrt(9 + 16) with sqrt(9) + sqrt(16): a product rule is not an addition rule.
Worksheet preview
- Simplify sqrt(48) exactly using its square factor.
- Between which consecutive integers does sqrt(48) lie? Justify using squares.
- Why cannot the square-factor method justify sqrt(9 + 16) = sqrt(9) + sqrt(16)?
This exercise is included in the free preview. Register free to complete it and download the preview PDFs. No payment is required.
Already registered? Sign in