Grade 3 Mathematics
Numbers Count Assignment
Day 2: Estimating Large Numbers

1. Journal Entry

2. When you are estimating large numbers with base ten blocks, which blocks do you count first? Explain why.

3. Estimate each group. Then count the exact number.
4. 1. 

   2. Estimate: __________

      Count: __________

   3. 

   4. Estimate: __________

      Count: __________

   5. 

   6. Estimate: __________

      Count: __________

   7. 

   8. Estimate: __________

      Count: __________

5. Luke saw a flock of birds sitting in a street. He wanted to know about how many there were. Use what you know about groups to estimate how many birds he saw.

6. 

   I estimate that Luke saw __________ birds.

Copyright ©2002, Alberta Learning.