Question

You are given that a 7.6.54 to 3 significant figures) and b = 123 (to 3 significant figures):

Calculate upper and lower bounds for a+b, give your answers to 3 significant figures:

Answer 1

• a=76.54=76.5(3significant)
• b=123

`\\ \sf\longmapsto a+b`

`\\ \sf\longmapsto 123+76.5`

`\\ \sf\longmapsto 199.5`

`\\ \sf\longmapsto 199`