Question

Give a rough estimate (by rounding off to nearest hundreds)
(a) 489+620 (b) 312×91​

Answer 1

Answer:

Hey Mate, I answered Your question, Hope It Helps!!!

Step-by-step explanation:

Part 1

489- estimating to its nearest Hundreds

Therefore, 489 will get converted to 500

620- estimating to its nearest Hundreds

Therefore, 620 will get converted to 600

Therefore,

489+620 = 500 + 600 = 1100

Part 2

312- estimating to its nearest Hundreds

Therefore, 312 will get converted to 300

91- estimating to its nearest Hundreds

Therefore, 91 will get converted to 100

Therefore,

312 x 91 = 300 x 100 = 30,000