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Addition and subtraction within 20 without regrouping


• You will improve your skills in adding and subtracting numbers of the second ten using place value;
• You will find the number of tens and ones in two-digit numbers up to 100;
• You will improve your skills in comparing named numbers shown in decimeters and centimeters;
• You will learn to add and subtract numbers within 20 without regrouping;
• You will practice counting money.


1
Calculate. Choose the correct numbers.
2
Find the number of tens and ones. Choose the correct numbers.
3
Insert the sign "less", "greater" or "equals".
4
Make a short note and solve the problem.
Tetyana has 10 books with stories and 8 with fairy tales.
How many books does Tetyana have in total?
5
Calculate. Choose the correct numbers.
6
Match the numbers that fit.
7
Calculate. Choose the correct numbers.
8
Make a short note and solve the problem.
A building company built 15 houses and put them up for sale.
10 houses were sold.
How many houses are left to sell?
9
Count the money. Choose the correct numbers.
10
Calculate. Choose the correct numbers.
11
Insert the sign "greater", "less" or "equals".
12
Make a short note and solve the problem.
The master made 19 boxes in one day, and his student made 7 less.
How many boxes did the student make?
13
Calculate. Choose the correct numbers.
14
Solve the chain tasks.
Help the mouse get to the cheese.