Estimation Worksheets Grade 3

1. A rectangular playground is drawn on a grid. The playground is 120 meters long and 85 meters wide. What is the total area of the playground in square meters?
2. A school is collecting books for their library. Third graders collected 1,238 books and fourth graders collected 985 books. About how many books were collected in total? Round each number to the nearest hundred before adding.
3. Liam is collecting cans for recycling. On Monday, he collected 127 cans. On Tuesday, he collected 94 cans. About how many cans did Liam collect in total? Round each number to the nearest ten before adding.

…and 4 more problems

1. Isabella is helping her dad organize the family's books. She counts 637 books on the main shelf and 289 books in the storage bin. About how many books do they have in total? Round each number to the nearest hundred before estimating the sum.
2. Ava is collecting stickers for her scrapbook. She has 561 stickers from her first set and 286 stickers from her second set. About how many stickers does Ava have in total? Round each number to the nearest hundred before estimating the sum.
3. Noah is looking at a rectangular garden drawn on a grid. The garden measures 86 centimeters long and 51 centimeters wide. Estimate the perimeter of the garden by rounding each measurement to the nearest ten first. What is the estimated perimeter?

…and 2 more problems

1. Estimate: 357 + 489 (round to nearest 100)
2. Mason is helping his grandma sort buttons into jars. She has 627 blue buttons and 289 red buttons. About how many buttons does Mason's grandma have in total? Round each number to the nearest hundred before estimating the sum.
3. A rectangular swimming pool is drawn with a length of 78 meters and a width of 45 meters. What is the perimeter of the pool?

…and 4 more problems