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Part 1
Numbers 0–10, adding and subtracting
1
The world of objects: properties, position, counting
Lessons 1–4
2
Shapes, sequences and groups
Lessons 5–8
3
Numbers to 10, first look at adding and subtracting
Lessons 9–13
4
The numbers and digits 1, 2, 3, 4
Lessons 14–17
5
The number 5; whole and parts; operations within 5
Lessons 18–20
6
The numbers and digits 6, 7, 8, 9
Lessons 21–24
7
The numbers 0 and 10; natural, even and odd numbers
Lessons 25–29
8
Lines; the parts of addition and subtraction
Lessons 30–33
9
Finding the unknown number
Lessons 34–37
10
Properties of addition, the addition table, expressions (end of Quarter 1)
Lessons 38–41
Part 2
Numbers to 100
11
Numbers 11 to 20: tens and ones
Lessons 42–45
12
The numbers 15–20 and comparing numbers to 20
Lessons 46–49
13
Brackets and adding across ten
Lessons 50–53
14
Ways to subtract within 20
Lessons 54–57
15
Numbers to 100: round tens, reading and writing
Lessons 58–61
16
Comparing and adding two-digit numbers
Lessons 62–65
17
Subtracting two-digit numbers
Lessons 66–69
18
Sums of several numbers and multi-step expressions (end of Quarter 2)
Lessons 70–74
Part 3
Word problems and measures
19
What a word problem is and how to solve it
Lessons 75–78
20
Problems about finding the whole
Lessons 79–82
21
Finding a part; “... more / ... fewer” problems
Lessons 83–86
22
Increasing, decreasing and “how many more?”
Lessons 87–90
23
Comparison problems: space theme
Lessons 91–94
24
Non-standard and two-step problems
Lessons 95–98
25
Length: centimetres and decimetres
Lessons 99–103
26
Mass (kilograms) and capacity (litres)
Lessons 104–107
27
Quantities and their properties (end of Quarter 3)
Lessons 108–111
Part 4
Geometry, expressions, equations
28
Segments and the length of a broken line
Lessons 112–115
29
Polygons and perimeter
Lessons 116–119
30
Quadrilaterals, angles, inside and boundary
Lessons 120–123
31
Equal shapes, tangram, symmetry and solid shapes
Lessons 124–128
32
Equalities and letter expressions
Lessons 129–132
33
Value of expressions, properties of operations, Roman numerals
Lessons 133–136
34
Equations
Lessons 137–140
35
Inverse problems and end-of-year review
Lessons 141–144
☰ Contents · Mathematics
Grade 1
›
Mathematics
›
Week 17
Subtracting two-digit numbers
Lessons 66–69 · 4 lessons · I.V. Repyova, Y.V. Zemlina. Mathematics Grade 1, Parts 1–4. Novda Edutainment, 2023
Lesson 66
Lesson 67
Lesson 68
Lesson 69
Quiz
8
Homework
5
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