Grade 2 · Maths · curriculum collection
Grade 2 Maths, Common Core domains
6 units for Grade 2 maths, organised by Common Core domain: Operations and Algebraic Thinking, Number and Operations in Base Ten, Measurement and Data. Each unit has a short lesson, a practice worksheet and a review worksheet, both with answer keys.
Answer-checked and approved on 29 October 2026
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Aligned by StudyBrix at domain level. Not an official publication of, or endorsed by, the standards' authors. Framework: Common Core State Standards for Mathematics.
Units in teaching order
2.OA Operations and Algebraic Thinking
Arithmetic
The equal sign and balanced equations, missing numbers in subtraction, missing numbers in addition, subtracting within 20, adding within 20 and multiplication facts.
Short lesson: Balance two sides
Study guide for Grades 2 to 4: 2 worked examples and 2 practice questions. Work out one side, then subtract the known part.
a + □ = b + c
Work out one side, then subtract the known part.
Worked example
Find the missing number: 22 + □ = 13 + 41.
13 + 41 − 22 = 32
Answer: 32
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
16 − □ = 15
Find the missing number: 22 + □ = 5 + 19.
7 × 1 = ?
12 + □ = 15
14 − 8 = ?
2 + 11 = ?
32 counters are shared equally among 4 children. How many counters does each child get?
4 equal groups have 9 objects each. How many objects altogether?
13 − 1 = ?
11 + 5 = ?
Answer key
- 1 16−15=1
- 2 5 + 19 − 22 = 2
- 7 7 × 1 = 7
- 3 15−12=3
- 6 6 + 8 = 14
- 13 2 + 11 = 13
- 8 32÷4=8
- 36 4×9=36
- 12 13−1=12
- 16 11+5=16
Review worksheet: 10 questions
Find the missing number: 7 + □ = 24 + 21.
16 − □ = 13
2 + □ = 11
3 × 12 = ?
13 + 7 = ?
13 − 7 = ?
4 counters are shared equally among 4 children. How many counters does each child get?
20 − 0 = ?
3 equal groups have 8 objects each. How many objects altogether?
5 + 6 = ?
Answer key
- 38 24 + 21 − 7 = 38
- 3 16−13=3
- 9 11−2=9
- 36 3 × 12 = 36
- 20 13 + 7 = 20
- 6 6 + 7 = 13
- 1 4÷4=1
- 20 20−0=20
- 24 3×8=24
- 11 5+6=11
2.NBT Number and Operations in Base Ten
Place value
Place value, comparing two-digit numbers, expanded form, hundreds, tens and ones, comparing numbers and tens and ones.
Short lesson: Tens and ones
Study guide for Grades 1 to 2: 2 worked examples and 2 practice questions. A group of ten can be exchanged for ten ones.
number = 10 × tens + ones
A group of ten can be exchanged for ten ones.
Worked example
Write the number with 8 tens and 1 ones.
8 × 10 + 1 = 81
Answer: 81
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
8 tens and 9 ones make what number?
9 hundreds, 5 tens and 1 ones make what number?
Write the number with 7 tens and 1 ones.
Which expanded form equals 935?
- 900 + 40 + 5
- 1000 + 30 + 5
- 900 + 30 + 6
- 900 + 30 + 5
Which number is greater: 15 or 20?
- 20
- 15
What is the value of the hundreds digit in 4819?
Choose the symbol: 48 □ 19
- >
- =
- <
1 tens and 3 ones make what number?
1 hundreds, 5 tens and 0 ones make what number?
Write the number with 9 tens and 8 ones.
Answer key
- 89 8×10+9=89
- 951 9×100+5×10+1=951
- 71 7 × 10 + 1 = 71
- 900 + 30 + 5 935=900+30+5
- 20 20 is greater.
- 800 8 × 100 = 800
- > 48 > 19
- 13 1×10+3=13
- 150 1×100+5×10+0=150
- 98 9 × 10 + 8 = 98
Review worksheet: 10 questions
4 tens and 0 ones make what number?
What is the value of the hundreds digit in 1069?
Choose the symbol: 68 □ 14
- <
- >
- =
Write the number with 1 tens and 0 ones.
Which expanded form equals 528?
- 500 + 20 + 9
- 500 + 30 + 8
- 600 + 20 + 8
- 500 + 20 + 8
3 hundreds, 9 tens and 8 ones make what number?
Which number is greater: 17 or 7?
- 17
- 7
8 tens and 8 ones make what number?
What is the value of the hundreds digit in 1603?
Choose the symbol: 73 □ 81
- >
- =
- <
Answer key
- 40 4×10+0=40
- 0 0 × 100 = 0
- > 68 > 14
- 10 1 × 10 + 0 = 10
- 500 + 20 + 8 528=500+20+8
- 398 3×100+9×10+8=398
- 17 17 is greater.
- 88 8×10+8=88
- 600 6 × 100 = 600
- < 73 < 81
2.NBT Number and Operations in Base Ten
Multi-digit calculation
Adding two-digit numbers, subtracting two-digit numbers, adding within 100 and subtracting within 100.
Short lesson: Two-digit addition
Study guide for Grades 2 to 3: 2 worked examples and 2 practice questions. Regroup ten ones as one ten when needed.
ones + ones; tens + tens
Regroup ten ones as one ten when needed.
Worked example
66 + 35 = ?
66 + 35 = 101
Answer: 101
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
36 − 10 = ?
45 − 43 = ?
12 + 25 = ?
31 + 18 = ?
51 − 49 = ?
97 − 30 = ?
22 + 20 = ?
64 + 84 = ?
75 − 21 = ?
85 − 57 = ?
Answer key
- 26 36−10=26
- 2 2 + 43 = 45
- 37 12+25=37
- 49 31 + 18 = 49
- 2 51−49=2
- 67 67 + 30 = 97
- 42 22+20=42
- 148 64 + 84 = 148
- 54 75−21=54
- 28 28 + 57 = 85
Review worksheet: 10 questions
69 + 3 = ?
82 + 20 = ?
88 − 77 = ?
60 − 55 = ?
59 + 11 = ?
17 + 41 = ?
43 − 39 = ?
32 − 14 = ?
87 + 8 = ?
40 + 85 = ?
Answer key
- 72 69+3=72
- 102 82 + 20 = 102
- 11 88−77=11
- 5 5 + 55 = 60
- 70 59+11=70
- 58 17 + 41 = 58
- 4 43−39=4
- 18 18 + 14 = 32
- 95 87+8=95
- 125 40 + 85 = 125
2.NBT Number and Operations in Base Ten
Counting patterns
Missing numbers in a sequence, skip counting, counting in tens, counting in fives and counting in twos.
Short lesson: Skip counting
Study guide for Grades 1 to 3: 2 worked examples and 2 practice questions. Find the repeated difference between neighbouring terms.
next term = previous term + step
Find the repeated difference between neighbouring terms.
Worked example
2, 7, 12, □, 22
12 + 5 = 17
Answer: 17
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
15, 16, □, 18, 19
70, 80, 90, □, 110
18, 20, 22, □, 26
2, 4, 6, □, 10
15, 20, 25, □, 35
82, 83, □, 85, 86
40, 50, 60, □, 80
14, 16, 18, □, 22
0, 2, 4, □, 8
40, 45, 50, □, 60
Answer key
- 17 16 + 1 = 17
- 100 Add 10 each time.
- 24 Add 2 each time.
- 8 6 + 2 = 8
- 30 Add 5 each time.
- 84 83 + 1 = 84
- 70 Add 10 each time.
- 20 Add 2 each time.
- 6 4 + 2 = 6
- 55 Add 5 each time.
Review worksheet: 10 questions
36, 37, □, 39, 40
9, 11, 13, □, 17
50, 60, 70, □, 90
45, 50, 55, □, 65
16, 18, 20, □, 24
57, 58, □, 60, 61
1, 3, 5, □, 9
90, 100, 110, □, 130
50, 55, 60, □, 70
20, 22, 24, □, 28
Answer key
- 38 37 + 1 = 38
- 15 13 + 2 = 15
- 80 Add 10 each time.
- 60 Add 5 each time.
- 22 Add 2 each time.
- 59 58 + 1 = 59
- 7 5 + 2 = 7
- 120 Add 10 each time.
- 65 Add 5 each time.
- 26 Add 2 each time.
2.MD Measurement and Data
Measurement & time
Adding lengths, comparing lengths, telling time to the hour and telling time to the half hour.
Short lesson: Hours and minutes
Study guide for Grades 2 to 4: 2 worked examples and 2 practice questions. Multiply hours by sixty, then add the extra minutes.
1 hour = 60 minutes
Multiply hours by sixty, then add the extra minutes.
Worked example
Convert 6 hours and 37 minutes to minutes.
6 × 60 + 37 = 397
Answer: 397 min
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
One strip is 35 cm long and another is 3 cm long. What is their total length?
A ribbon is 20 cm long and another is 13 cm long. How many centimetres longer is the first ribbon?
The minute hand points to 6 and the hour hand is halfway after 5. What time is it?
- 5:30
- 6:30
- 6:05
- 5:00
A clock's minute hand points to 12 and its hour hand points to 4. What time is it?
- 5:00
- 12:04
- 4:00
- 4:30
One strip is 14 cm long and another is 43 cm long. What is their total length?
A ribbon is 22 cm long and another is 1 cm long. How many centimetres longer is the first ribbon?
The minute hand points to 6 and the hour hand is halfway after 1. What time is it?
- 2:30
- 6:01
- 1:00
- 1:30
A clock's minute hand points to 12 and its hour hand points to 8. What time is it?
- 8:30
- 8:00
- 9:00
- 12:08
One strip is 13 cm long and another is 37 cm long. What is their total length?
A ribbon is 43 cm long and another is 17 cm long. How many centimetres longer is the first ribbon?
Answer key
- 38 35+3=38 cm
- 7 20−13=7 cm
- 5:30 Half past 5 is 5:30.
- 4:00 It is 4:00.
- 57 14+43=57 cm
- 21 22−1=21 cm
- 1:30 Half past 1 is 1:30.
- 8:00 It is 8:00.
- 50 13+37=50 cm
- 26 43−17=26 cm
Review worksheet: 10 questions
One strip is 26 cm long and another is 37 cm long. What is their total length?
A ribbon is 41 cm long and another is 15 cm long. How many centimetres longer is the first ribbon?
A clock's minute hand points to 12 and its hour hand points to 6. What time is it?
- 6:30
- 6:00
- 7:00
- 12:06
The minute hand points to 6 and the hour hand is halfway after 10. What time is it?
- 10:00
- 10:30
- 6:10
- 11:30
One strip is 37 cm long and another is 4 cm long. What is their total length?
A ribbon is 30 cm long and another is 29 cm long. How many centimetres longer is the first ribbon?
A clock's minute hand points to 12 and its hour hand points to 11. What time is it?
- 12:00
- 11:00
- 11:30
- 12:11
The minute hand points to 6 and the hour hand is halfway after 7. What time is it?
- 7:30
- 6:07
- 8:30
- 7:00
One strip is 4 cm long and another is 40 cm long. What is their total length?
A ribbon is 32 cm long and another is 28 cm long. How many centimetres longer is the first ribbon?
Answer key
- 63 26+37=63 cm
- 26 41−15=26 cm
- 6:00 It is 6:00.
- 10:30 Half past 10 is 10:30.
- 41 37+4=41 cm
- 1 30−29=1 cm
- 11:00 It is 11:00.
- 7:30 Half past 7 is 7:30.
- 44 4+40=44 cm
- 4 32−28=4 cm
2.MD Measurement and Data
Data
Reading data tables, comparing data in charts and reading picture graphs.
Short lesson: Read and total a table
Study guide for Grades 1 to 3: 2 worked examples and 2 practice questions. Add the counts for all categories.
total = a + b + c
Add the counts for all categories.
Worked example
A class counts blocks: red 12, blue 5, yellow 7. How many blocks in all?
12 + 5 + 7 = 24
Answer: 24
Worksheets
A practice worksheet and a review worksheet, 10 and 10 questions.
Practice worksheet: 10 questions
A chart shows 18 apples and 15 oranges. How many more apples than oranges?
A class chart shows 12 cat votes and 5 dog votes. How many votes altogether?
A class counts blocks: red 1, blue 6, yellow 2. How many blocks in all?
A chart shows 15 apples and 1 oranges. How many more apples than oranges?
A class chart shows 9 cat votes and 8 dog votes. How many votes altogether?
A class counts blocks: red 10, blue 11, yellow 7. How many blocks in all?
A chart shows 19 apples and 3 oranges. How many more apples than oranges?
A class chart shows 9 cat votes and 6 dog votes. How many votes altogether?
A class counts blocks: red 9, blue 9, yellow 9. How many blocks in all?
A chart shows 20 apples and 9 oranges. How many more apples than oranges?
Answer key
- 3 18−15=3
- 17 12+5=17
- 9 1 + 6 + 2 = 9
- 14 15−1=14
- 17 9+8=17
- 28 10 + 11 + 7 = 28
- 16 19−3=16
- 15 9+6=15
- 27 9 + 9 + 9 = 27
- 11 20−9=11
Review worksheet: 10 questions
A class counts blocks: red 5, blue 12, yellow 1. How many blocks in all?
A class chart shows 4 cat votes and 1 dog votes. How many votes altogether?
A chart shows 11 apples and 4 oranges. How many more apples than oranges?
A class counts blocks: red 9, blue 6, yellow 2. How many blocks in all?
A class chart shows 8 cat votes and 1 dog votes. How many votes altogether?
A chart shows 9 apples and 4 oranges. How many more apples than oranges?
A class counts blocks: red 3, blue 2, yellow 4. How many blocks in all?
A class chart shows 10 cat votes and 4 dog votes. How many votes altogether?
A chart shows 17 apples and 12 oranges. How many more apples than oranges?
A class counts blocks: red 9, blue 1, yellow 9. How many blocks in all?
Answer key
- 18 5 + 12 + 1 = 18
- 5 4+1=5
- 7 11−4=7
- 17 9 + 6 + 2 = 17
- 9 8+1=9
- 5 9−4=5
- 9 3 + 2 + 4 = 9
- 14 10+4=14
- 5 17−12=5
- 19 9 + 1 + 9 = 19