Estimating Sum & Problem Solving (Addition)

Which among the addends represents the best estimate of 888 + 679?

• 800 + 600

• 900 + 700

• 800 + 700

What is the estimated sum of 888 + 679?

• 1 600

• 1 500

• 1 400

What is the estimated sum of 350 + 123?

• 500

• 400

• 600

What is the estimated sum of 321 + 486?

• 800

• 807

• 900

There are 12 cows, 23 ducks, and 51 chickens in the farm. How many animals are there in the farm?

What are the given facts in the problem?

• 12 cows, 23 chickens, and 51 ducks

• 12 cows, 23 ducks, and 51 chickens

• 12 ducks, 23 chickens, 51 cows

There are 12 cows, 23 ducks and 51 chickens in the farm. How many animals are there in the farm?

What is asked?

• The total number of farm animals.

• The total number of cows and ducks.

• The total number of cows, ducks, and goats.

There are 12 cows, 23 ducks and 51 chickens in the farm. How many animals are there in the farm?

What process (operation) are we going to use to solve the problem?

• Subtraction

• Addition

• Addition and Subtraction

There are 12 cows, 23 ducks and 51 chickens in the farm. How many animals are there in the farm?

What is the correct equation or number sentence for the problem?

• 12 + 23 + 15 = N

• 21 + 23 + 51 = N

• 12 + 23 + 51 = N

There are 12 cows, 23 ducks and 51 chickens in the farm. How many animals are there in the farm?

Which of the following is the correct solution?

• 12 + 23 + 51 = 86

• 12 + 23 + 15 = 50

• 21 + 23 + 51 = 95

There are 12 cows, 23 ducks and 51 chickens in the farm. How many animals are there in the farm?

What is the final answer to the word problem?

• There are 95 animals in the farm.

• There are 50 animals in the farm.

• There are 86 animals in the farm.