Theme Tasks catalog
Decimeter. Measuring the length of segments in decimeters and centimeters
• You will learn about a new unit for measuring length – the decimeter and its short symbol;
• You will learn to find the length of segments with a ruler in a picture, write the result of measuring, and change centimeters to decimeters and centimeters;
• You will practice finding the number of units in numbers of the second ten and choose numbers that have the given number of tens and units;
• You will learn to solve expressions with two operations.
• You will learn to find the length of segments with a ruler in a picture, write the result of measuring, and change centimeters to decimeters and centimeters;
• You will practice finding the number of units in numbers of the second ten and choose numbers that have the given number of tens and units;
• You will learn to solve expressions with two operations.
1
Choose the missing numbers.
Choose the missing numbers.
2
Count the pencils and choose the right numbers.
Count the pencils and choose the right numbers.
3
Fill in the sign "greater", "less" or "equals".
Fill in the sign "greater", "less" or "equals".
4
Make a short note and solve the problem.
Dad bought 8 liters of grape juice.
In a week, they drank 6 liters.
How many liters of juice are left?
Make a short note and solve the problem.
Dad bought 8 liters of grape juice.
In a week, they drank 6 liters.
How many liters of juice are left?
5
Choose the right number of units.
Choose the right number of units.
6
Look at the segment.
What is the length of the segment?
10 centimeters.
10 centimeters is 1 decimeter.
Let's do the task together.
We will find the length of the segment and choose the right result of measuring in decimeters and centimeters.
Look at the screen.
The length of this segment is 19 centimeters, which is 1 decimeter and 9 centimeters.
Let's drag the right numbers.
Do the next tasks by yourself.
Look at the segment.
What is the length of the segment?
10 centimeters.
10 centimeters is 1 decimeter.
Let's do the task together.
We will find the length of the segment and choose the right result of measuring in decimeters and centimeters.
Look at the screen.
The length of this segment is 19 centimeters, which is 1 decimeter and 9 centimeters.
Let's drag the right numbers.
Do the next tasks by yourself.
7
Find the length of each segment.
Choose the results of measuring.
Find the length of each segment.
Choose the results of measuring.
8
Make a short note and solve the problem.
There are 50 onions in the big bunch, and 20 in the small one.
How many more onions are in the big bunch?
Make a short note and solve the problem.
There are 50 onions in the big bunch, and 20 in the small one.
How many more onions are in the big bunch?
9
Change as in the example.
Choose the right numbers.
Change as in the example.
Choose the right numbers.
10
Choose the numbers that have the given number of tens and units.
Choose the numbers that have the given number of tens and units.
11
Choose the neighbor numbers.
Choose the neighbor numbers.
12
Make a short note and solve the problem.
There are 30 students in class 1A, and 20 in class 1B.
How many students are there in all first classes?
Make a short note and solve the problem.
There are 30 students in class 1A, and 20 in class 1B.
How many students are there in all first classes?
13
Add 30. Choose the right numbers.
Add 30. Choose the right numbers.
14
Calculate. Choose the right numbers.
Calculate. Choose the right numbers.
