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Part 1
Review, divisibility, data and diagrams
1
Review: multi-digit numbers, operations and motion
Lessons 1–5
2
Review: formulas, rate of work, equations and the number ray
Lessons 6–9
3
Review: time, perimeter and area; divisors and multiples
Lessons 10–13
4
Divisibility rules for 5, 2, 3 and 9
Lessons 14–17
5
Divisibility by 4; problem solving; unit review
Lessons 18–21
6
Sets, data, the mean and frequency
Lessons 22–25
7
Real-life tasks, parallel and perpendicular lines, the number ray
Lessons 26–29
8
The coordinate grid, bar charts and line (strip) charts
Lessons 30–33
9
Graphs, problem solving and Venn diagrams
Lessons 34–37
10
Problem solving, ecology problems and unit review: data and charts
Lessons 38–41
Part 2
Number ray, motion, rounding and estimation
11
Practical tasks, number ray and scales, distance between points
Lessons 42–46
12
Problem solving, distance–time–speed, joint motion and opposite motion
Lessons 47–50
13
Opposite motion and an introduction to catch-up motion
Lessons 51–54
14
Catch-up and delayed-start motion; unit review: number ray and motion
Lessons 55–58
15
Exact and approximate values, measurement error, ≈, rounding to tens
Lessons 59–62
16
Rounding: hundreds, a given place, up and down; estimating sums
Lessons 63–67
17
Estimating products, perimeter and ways to find area; problem solving
Lessons 68–72
Part 3
Fractions, decimals and percent
18
Division, shares and parts
Lessons 73–77
19
Parts of quantities, proper and improper fractions, mixed numbers
Lessons 78–81
20
Fractions on the number ray, mixed and improper fractions, comparing fractions
Lessons 82–85
21
Fraction problems, review; adding and subtracting fractions
Lessons 86–90
22
Adding and subtracting fractions, adding mixed numbers
Lessons 91–94
23
Adding mixed numbers, subtracting from one and from a whole, subtracting with regrouping
Lessons 95–99
24
Subtracting with regrouping, multiplying a fraction by a whole number, operations with fractions
Lessons 100–103
25
Decimals: tenths, hundredths and thousandths; length
Lessons 104–108
26
Length and mass as decimals, percent; review of decimals
Lessons 109–112
Part 4
Symmetry, solid shapes, angles
27
Line symmetry, reflection and point symmetry
Lessons 113–116
28
Area of irregular shapes, the cuboid, polygons and prisms
Lessons 117–120
29
The net of a prism, pyramids
Lessons 121–123
30
The net of a pyramid, circle and sphere, the cylinder and its net
Lessons 124–127
31
The cone and its net, problem solving
Lessons 128–130
32
Review of symmetry and solids, comparing angles, degrees
Lessons 131–133
33
Measuring angles with a protractor
Lessons 134–136
34
Drawing angles, problem solving, review of angles
Lessons 137–140
☰ Contents · Mathematics
Grade 4
›
Mathematics
›
Week 22
Adding and subtracting fractions, adding mixed numbers
Lessons 91–94 · 4 lessons · I.V. Repyova. Mathematics Grade 4, Parts 1–4. Novda Edutainment, Tashkent, 2023
Lesson 89
Lesson 90
Lesson 91
Lesson 92
Quiz
9
Homework
5
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