Theme Tasks catalog
Addition and subtraction of zero. Subtracting equal numbers
• You will learn how to do addition and subtraction with 0 and subtract equal numbers using a number line;
• You will practice adding and subtracting 0;
• You will improve your skills to find unknown parts and results in addition and subtraction;
• You will solve problems to find the sum and the difference.
• You will practice adding and subtracting 0;
• You will improve your skills to find unknown parts and results in addition and subtraction;
• You will solve problems to find the sum and the difference.
1
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
2
You see plates.
Let's find out how many apples are on two plates?
There are three apples on the first plate,
on the second plate there are no apples.
You already know that in math, when there are no objects, we write the number zero.
So, on the second plate there are zero apples.
Let's write the equation:
add zero to three, we get three.
So, on two plates there are three apples in total.
Remember!
If you add zero to a number, the number stays the same.
It doesn't change.
You see plates.
Let's find out how many apples are on two plates?
There are three apples on the first plate,
on the second plate there are no apples.
You already know that in math, when there are no objects, we write the number zero.
So, on the second plate there are zero apples.
Let's write the equation:
add zero to three, we get three.
So, on two plates there are three apples in total.
Remember!
If you add zero to a number, the number stays the same.
It doesn't change.
3
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
4
Find the whole for each pair.
Drag the correct answers.
Find the whole for each pair.
Drag the correct answers.
5
Choose the addends. Insert the correct numbers.
Choose the addends. Insert the correct numbers.
6
Drag the number that comes before each number.
Drag the number that comes before each number.
7
Find the missing part.
Drag the correct numbers to the spaces.
Find the missing part.
Drag the correct numbers to the spaces.
8
Listen to the story problem.
Ben has two boxes of toy cars.
He has 5 cars in the first box and 4 cars in the second box.
How many toy cars does Ben have in all?
Complete the bar model. Drag the numbers from the story problem.
Listen to the story problem.
Ben has two boxes of toy cars.
He has 5 cars in the first box and 4 cars in the second box.
How many toy cars does Ben have in all?
Complete the bar model. Drag the numbers from the story problem.
9
Look, there are 3 apples on the plate.
No one took any apples.
How many apples are left?
Let's write the equation:
Three minus zero equals three.
So, there are three apples left on the plate.
Remember!
If you subtract zero from a number, you get the same number.
Look, there are 3 apples on the plate.
No one took any apples.
How many apples are left?
Let's write the equation:
Three minus zero equals three.
So, there are three apples left on the plate.
Remember!
If you subtract zero from a number, you get the same number.
10
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
11
Complete the equations.
Drag the correct numbers.
Complete the equations.
Drag the correct numbers.
12
Find the missing parts! Drag the numbers.
Find the missing parts! Drag the numbers.
13
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
14
Look at the picture.
Use the number bond to solve the problem.
Look at the picture.
Use the number bond to solve the problem.
15
Fill in the blanks. Choose the correct numbers.
Fill in the blanks. Choose the correct numbers.
16
Complete the equations. Drag the correct numbers.
Complete the equations. Drag the correct numbers.
17
Look! There were 4 cookies on the plate.
Then, 4 cookies are eaten.
How many cookies are left on the plate?
We can see the plate is empty.
So, there are zero cookies left.
Let’s write a subtraction sentence:
Four minus four equals zero.
Remember!
When you subtract a number from itself, you always get zero.
Look! There were 4 cookies on the plate.
Then, 4 cookies are eaten.
How many cookies are left on the plate?
We can see the plate is empty.
So, there are zero cookies left.
Let’s write a subtraction sentence:
Four minus four equals zero.
Remember!
When you subtract a number from itself, you always get zero.
18
19
Complete the number sentences.
Drag the correct numbers.
Complete the number sentences.
Drag the correct numbers.
20
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
