Estimating Sums in Fun 3-Digit Addition Challenges

A bakery sold 125 cupcakes in the morning and 238 cupcakes in the afternoon. How many cupcakes did they sell in total?

• 363

• 300

• 250

• 400

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A library has 456 books on one shelf and 289 books on another shelf. Estimate how many books are on both shelves combined.

• 750

• 500

• 600

• 800

In a toy store, there are 312 action figures and 145 dolls. How many toys are there altogether?

• 500

• 300

• 450

• 457

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A farmer harvested 275 apples and 348 oranges. How many fruits did he harvest in total?

• 500

• 623

• 600

• 700

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A school has 423 students in grade 3 and 256 students in grade 4. How many students are there in both grades?

• 256 students

• 679 students

• 679

• 423 students

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A zoo has 134 lions, 245 tigers, and 156 bears. Estimate the total number of big cats in the zoo.

• 245

• 156

• 400

• 379

A car dealership sold 198 cars in January and 275 cars in February. How many cars did they sell in those two months?

• 300

• 473

• 500

• 450

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A factory produced 512 toys in January and 389 toys in February. How many toys were produced in total?

• 950

• 901

• 750

• 800

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A concert had 275 attendees on the first day and 348 on the second day. How many people attended the concert over the two days?

• 600

• 623

• 700

• 500

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A bookstore sold 145 mystery books and 267 adventure books. How many books did they sell in total?

• 367

• 300

• 450

• 412

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2