Question

Simplify: 218.671 – 409.099 + 388.994 – 143.001 + 1​

Answer 1

439+334+4,317

Rough estimate-

439+334+4,317\ \Rightarrow400+300+4,300\ =5,000439+334+4,317 ⇒400+300+4,300 =5,000

Closer estimate-

439+334+4,317\ \Rightarrow440+330+4,320\ \Rightarrow\ 5,090439+334+4,317 ⇒440+330+4,320 ⇒ 5,090

Answer 2

Answer:

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