Question

321+357estmated sum​

Answer 1

Answer:

Step-by-step explanation:

321 estimated to the nearest hundreds= 300

357 estimated to the nearest hundreds =400

Therfore,300+400=700

The actual ans will be 321+357=678

678 estimated to nearest hundreds=700

Hence,proved.

Answer 2

Answer:

Estimated Sum

• 321+ 357
• 678

Rounded off to ones:

=680

Rounded off to tens:

=700

Rounded off to hundred:

=700

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