403, 892 rounded to the nearest thousand is 404,000.
The three is in the thousands place, and the 8 in the hundreds place tells us us to round up. The three becomes a 4 and everything behind it a 0. :)
I think group 1 if it is wrong then write is comment box
1) <u>∵∵∵∵∵∵</u>
2) ∵∵∵∵∵∵
3) ∵∵∵∵∵∵
4) ∵∵∵∵∵∵
5) ∵∵∵∵∵∵
30 groups of dots: 6 in each row and 5 in each column. I selected 1/5 of the dots, which equals 6 groups of dots.