Theme Tasks catalog
Problems to find the unknown subtrahend
• You will practice adding and subtracting two-digit numbers up to 100 by place value;
• You will remember how to find the unknown subtrahend;
• You will learn to solve problems to find the unknown subtrahend;
• You will practice adding and subtracting round numbers in a "chain";
• You will choose solutions to problems and find the mistake in the solution;
• You will practice comparing an expression and a number.
• You will remember how to find the unknown subtrahend;
• You will learn to solve problems to find the unknown subtrahend;
• You will practice adding and subtracting round numbers in a "chain";
• You will choose solutions to problems and find the mistake in the solution;
• You will practice comparing an expression and a number.
1
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
2
Make a short note and solve the problem.
There were turkeys in the yard.
After 15 turkeys went to the garden, there were 24 left in the yard.
How many turkeys were in the yard at first?
Make a short note and solve the problem.
There were turkeys in the yard.
After 15 turkeys went to the garden, there were 24 left in the yard.
How many turkeys were in the yard at first?
3
Choose the numbers that fit.
Choose the numbers that fit.
4
Insert the sign greater, less or equals.
Insert the sign greater, less or equals.
5
Find the unknown subtrahend.
Find the unknown subtrahend.
6
Choose the solution for the problem.
There were 39 pears in the basket.
Sashko took some pears.
After that, there were 34 pears left in the basket.
How many pears did Sashko take from the basket?
Choose the solution for the problem.
There were 39 pears in the basket.
Sashko took some pears.
After that, there were 34 pears left in the basket.
How many pears did Sashko take from the basket?
7
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
8
Choose the solution for the problem.
Khrystynka had 98 hryvnias.
She spent 5 hryvnias on ice cream.
How much money does Khrystynka have left?
Choose the solution for the problem.
Khrystynka had 98 hryvnias.
She spent 5 hryvnias on ice cream.
How much money does Khrystynka have left?
9
Find the neighboring numbers.
Find the neighboring numbers.
10
Find the mistake in the solution of the problem.
There are 54 young apple trees in the garden.
Some of the apple trees have already been pruned.
23 apple trees are still not pruned.
How many apple trees have already been pruned?
Find the mistake in the solution of the problem.
There are 54 young apple trees in the garden.
Some of the apple trees have already been pruned.
23 apple trees are still not pruned.
How many apple trees have already been pruned?
11
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
12
Find the number of tens and ones. Choose the correct numbers.
Find the number of tens and ones. Choose the correct numbers.
13
Make a short note and solve the problem.
There were 67 packs of butter in the shop.
During the day, some packs of butter were sold,
after that, there were 35 left in the shop.
How many packs of butter were sold during the day?
Make a short note and solve the problem.
There were 67 packs of butter in the shop.
During the day, some packs of butter were sold,
after that, there were 35 left in the shop.
How many packs of butter were sold during the day?
14
Calculate. Choose the correct numbers.
Calculate. Choose the correct numbers.
