Estimation

Ms. Shelton wants to buy a new phone. She has $682. The phone costs $894. About how much more money does Ms. Shelton need to buy the phone?

Round 714 to the nearest hundred

Ms. Muñoz has 457 pens. Then, she got 152 pens as a gift. About how many pens does Ms. Muñoz have in all?

Jennifer is writing thank you cards for her birthday gifts. She has 198 cards written. She needs to write 613 cards. About how many more thank you cards does she need to write?

Use the array model to write a multiplication sentence below.

What will be the new number sentence if we want to estimate 37 x 9? _____ x _____

Use the area model to solve the product of 27 and 4.

Collins Elementary has 8 fourth grade classroom. There are 19 students in each classroom. Estimate how many 4th grade students there are in Collins Elementary.

Solve the following:

Alexander wants to buy a car. He has $428. The car costs $904. About how much more money does Alexander needs to buy the car?

Ms. Bravo has 18 book crates. Each crate has 7 books. About how many books does Ms. Bravo have in all?

True or False: We will do awesome in tomorrow's test!!!

Mrs. Shelton jogged 143 miles. By the end of the week, she wants to walk 348 miles. About how many miles does Mrs. Shelton need to jog?

The enrollment for basketball was 216 players during the winter. In the spring, enrollment increased by 126 players. What is the approximate of players in all?

Round 55 to the nearest ten

Use the array model to write a multiplication sentence below.

Use the area model to solve the product of 29 and 6.

Round 456 to the nearest hundred

The enrollment at Elsik High School was 878 in 2019. In 2020, the enrollment increased by 432 students. What is the approximate population at Elsik High School?

A family of 28 people is going bowling. Tickets cost $8 each. Which is the best estimate for the total cost of the tickets?

Ms. Lopez has 43 envelopes. Each envelope has 7 dollars. About how many dollars does Ms. Lopez have in all?

The table below shows how many cupcakes Sandra sold during a baking sale in 4 days. Approximately how many cupcakes did Sandra sell in 4 days?

Ms. Concannon made 253 crafts. She needs to make 821 crafts. About how many more crafts does Ms. Concannon need to do?