Word Problems (Addition and Subtraction)

Word Problems (Addition and Subtraction)

Question 1

Think about:

people = adult + children

children = boys +girls

Answer this question on the next slide.

Fill in the Blanks

There were 3000 people at a concert.

There were 1894 adults and the rest were children.

875 children were girls.

How many boys were there?

Question 2

Think about:

There are a total of 5772 of goldfish and swordtail altogether.

How many swordtails were there before 59 more are added?

Answer this question on the next slide.

Fill in the Blanks

There were 5772 goldfish and swordtails in an aquarium.

3047 of them were goldfish.

Another 59 swordtails were added into the aquarium.

How many swordtails were there in the aquarium in the end?

Question 3

Think about:

The number of spectators on the second day.

Answer this question on the next slide.

Fill in the Blanks

A car race was held for two days.

On the first day, there were 2900 spectators.

There were 729 more spectators on the first day than on the second day.

How many spectators were there altogether?

Question 4

Understand that this question is asking for the TOTAL pieces placed in BOTH first and second days.

Answer this question on the next slide.

Fill in the Blanks

Jiayi loves jigsaw puzzles.

On the first day, she placed 1030 pieces in the correct position.

On the second day, she placed 5 more pieces than on the first day.

How many pieces did she place correctly after two days?

Question 5

Think about the number of tiles laid on Monday and Tuesday (there are 279 remaining from 6010).

Answer this question on the next slide.

Fill in the Blanks

Roy needed 6010 tiles to completely cover a hall.

He laid some tiles on Monday and 4823 tiles on Tuesday.

He found that he still needed 279 tiles more.

How many tiles did he lay on Monday?

Question 6

First, find the number of apples.

Answer this question on the next slide.

Fill in the Blanks

There are apples, pears and oranges in a box.

There are 2890 pears in the box.

There are 812 fewer apples than pears.

There are 178 fewer oranges than apples.

How many oranges are there in the box?