Estimation and Number Theory

Steve had $2,894. The leather couch cost $5,387. About how much more does he need to buy it?

From the area model, what is the product of 28 x 6?

_____ is the product of 47 x 8.

Tom sold 36 apples in week 1, 58 apples in week 2, and 42 in week 3. About how many apples did Tom sell?

Look at the array. What is 5 rows of 16?

Which is the closest estimate of 86 x 7?

Tim has 48 boxes with 7 erasers in each box. About how many erasers does he have in all?

Which shows a way to multiply 7 x 35?

Tim has $1,256. The tv he wants is $$2,895. About how much more does he need to buy the tv?

Jim has 36 boxes. Each holds 5 beads. About how many beads does Jim have in all?

There are 3 vans are taking students to the field trip. If 34 students are going, about how many will be on each van?

Which of the following statements is incorrect?

Which of the statements is incorrect?

What is the product of 32 x 7?

3 is a common factor of 24 and _____

The fifth multiple of 9 is?

62 people waiting to ride a train. Each train has 6 cars. About how many on each car?

6 is a common factor of 24 and _______.

Name a common multiple of 6 and 8 that is between 40 and 50.

What is the closest estimate of 67 x 3?

Jim has 39 boxes of rings. Each box holds 4 rings. About how many rings does Jim have?

Which statement is incorrect?

45 students planned to go to the movies. Each ticket costs $7. If 8 students did not go, about how much was the cost?

Kyle has 1,786 shells. Joan has 2,345. About how many shells do they have to the nearest 100?

Which is the closest estimate of 84 x 9?

Which is the closest estimate to 73 x 6?

What are the factors of the number 6?