Theme Tasks catalog
Addition with regrouping within 20
• You will practice how to solve addition and subtraction expressions within 20 without regrouping;
• You will learn how to do addition within 20 with regrouping;
• You will learn to add one-digit numbers with regrouping by splitting numbers into easy addends;
• You will improve your skills to find the unknown addend, unknown subtrahend, and the difference;
• You will solve problems to find the unknown subtrahend, compare numbers by difference, and increase a number by a few units.
• You will learn how to do addition within 20 with regrouping;
• You will learn to add one-digit numbers with regrouping by splitting numbers into easy addends;
• You will improve your skills to find the unknown addend, unknown subtrahend, and the difference;
• You will solve problems to find the unknown subtrahend, compare numbers by difference, and increase a number by a few units.
1
Insert the sign "greater", "less" or "equals".
Insert the sign "greater", "less" or "equals".
2
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
3
Subtract 10. Choose the correct numbers.
Subtract 10. Choose the correct numbers.
4
Solve the problem. There were 12 liters of gasoline in the motorcycle's tank.
After the trip, 2 liters of gasoline were left.
How many liters of gasoline did the motorcyclist use during the trip?
Solve the problem. There were 12 liters of gasoline in the motorcycle's tank.
After the trip, 2 liters of gasoline were left.
How many liters of gasoline did the motorcyclist use during the trip?
5
Fill in the blanks. Choose the correct numbers.
Fill in the blanks. Choose the correct numbers.
6
How to solve 8 plus 5?
You need to split 5 into easy addends.
How?
The first addend needs to be completed to 10.
This is number 2.
So, 5 needs to be split into 2 and 3.
Add 2 to 8, you get 10.
10 plus 3 equals 13.
Let's do the task together.
Let's solve the expression by splitting the numbers into easy addends.
Look at the screen.
We need to solve 5 plus 7.
First, split 7 into easy addends.
The first addend needs to be completed to 10.
This is number 5.
So, 7 needs to be split into 5 and 2.
Drag the correct numbers into the empty boxes.
Add 5 to 5, you get 10.
10 plus 2 equals 12.
Drag the correct numbers into the empty boxes.
Do the next tasks by yourself.
How to solve 8 plus 5?
You need to split 5 into easy addends.
How?
The first addend needs to be completed to 10.
This is number 2.
So, 5 needs to be split into 2 and 3.
Add 2 to 8, you get 10.
10 plus 3 equals 13.
Let's do the task together.
Let's solve the expression by splitting the numbers into easy addends.
Look at the screen.
We need to solve 5 plus 7.
First, split 7 into easy addends.
The first addend needs to be completed to 10.
This is number 5.
So, 7 needs to be split into 5 and 2.
Drag the correct numbers into the empty boxes.
Add 5 to 5, you get 10.
10 plus 2 equals 12.
Drag the correct numbers into the empty boxes.
Do the next tasks by yourself.
7
Solve the expressions by splitting the numbers into easy addends.
Solve the expressions by splitting the numbers into easy addends.
8
Make a short record and solve the problem.
The length of the first segment is 10 cm, the second is 15 cm.
How many centimeters is the first segment shorter than the second?
Make a short record and solve the problem.
The length of the first segment is 10 cm, the second is 15 cm.
How many centimeters is the first segment shorter than the second?
9
Fill in the blanks. Choose the correct numbers.
Fill in the blanks. Choose the correct numbers.
10
Count the money. Choose the correct numbers.
Count the money. Choose the correct numbers.
11
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
12
Make a short record and solve the problem.
Mykola picked 10 glasses of red currants,
and black currants – 5 glasses more.
How many glasses of black currants did Mykola pick?
Make a short record and solve the problem.
Mykola picked 10 glasses of red currants,
and black currants – 5 glasses more.
How many glasses of black currants did Mykola pick?
