Question

II.Give a rough estimate ( by rounding off to the nearest hundreds)
and also a closer estimate ( by rounding to the nearest tens )
a) 439 + 334 + 4,317

b) 8325 – 491

Answer 1

Answer:

Here is you answer

Step-by-step explanation:

(a) 439+334+4,317439+334+4,317

Rough estimate-

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

Closer estimate-

439+334+4,317 ⇒440+330+4,320⇒ 5,090

[b] 8,325−491

Rough estimate-

8,325-491⇒8,300-500 =7,8008,325−491 ⇒8,300−500 =7,800

Closer estimate-

8,325-491⇒8,330-490  =7,840

hope it helps you❤

Answer 2

Answer:

(a) 439+334+4,317439+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

(b)8,325-4918,325−491

Rough estimate-

8,325-491\ \Rightarrow8,300-500\ =7,8008,325−491 ⇒8,300−500 =7,800

Closer estimate-

8,325-491\ \Rightarrow8,330-490\ =7,8408,325−491 ⇒8,330−490 =7,840