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Estimating 4 digits

Estimating sums and differences with 4 digit numbers

Mrs. Franks asked community members to donate school supplies to Harrison. They donated 3,942 pencils and 2,934 notebooks. About how many more pencils, to the nearest hundreds, were donated than notebooks? About 1,000 more pencils were donated than notebooks.
The Hershey’s Factory made 2,035 chocolate bars on Monday and 4,823 bars on Tuesday. To the nearest thousand, about how many chocolate bars did the factory make in all those two days? The factory made about 7,000 chocolate bars in all.
Mr. Hale is trying to estimate how much black and green construction paper he has. He has 6,382 pieces of black paper and 9,824 pieces of green. About how many pieces of green does he have than black? There are about 4,000 more pieces of green paper than black.
Janelle bought a bag of beads. There are 2,353 red beads and 3,804 blue beads in the bag. To the nearest thousand, about how many beads are there in all? There are about 4,000 beads in all.
Ms. Gilberts observes a field to determine how many tulips and daises there are. She counts 9,242 tulips and 5,853 daises. Determine about how many more tulips there are than daises. There are about 3,000 more tulips than daises in the field.
Scientists tracked a humpback whale for 2 months.. The whale swam 2,398 miles the 1st month and 4,875 miles the next. About how many more miles, to the nearest hundred, did the whale swim the 2nd month than the 1st? The whale swam about 2,500 more miles the second month.
Created by: HarrTeacher