Sumdog's math topics
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Each one of Sumdog's
math games can cover any of the 122 numeracy topics. These topics are spread across 10 levels of increasing difficulty.
Students can choose which topics to practise when starting a game. Teacher who have signed up for a free teacher login can also set challenges and competitions for their students, to focus on individual topics.
Level 1
| Topic |
Sample Question |
| Ordering numbers up to 20 |
Which is largest? 8, 4, 11, 3 |
| Adding 1 to a number up to 20 |
11 + 1 |
| Subtracting 1 from a number up to 20 |
15 - 1 |
| Adding the numbers 0 to 5 |
2 + 5 |
| Subtracting the numbers 0 to 5 |
3 - 0 |
| Adding numbers that total 10 |
6 + ? = 10 |
| Subtracting numbers from 10 |
10 - 7 |
| Adding the numbers 0 to 10 |
9 + 7 |
| Subtracting the numbers 0 to 10 |
8 - 5 |
Level 2
| Topic |
Sample Question |
| Doubling up to 10 |
Double 4? |
| Halving up to 10 |
Half of 2? |
| Basic number sequences (add and subtract up to 10) |
1, 2, 3, ? |
| Adding 10 to multiples of 10 |
10 + 10 |
| Subtracting 10 from multiples of 10 |
20 - 10 |
| Ordering numbers up to 100 |
Which is largest? 77, 73, 51, 23 |
| Groups of 2, 5, and 10 |
2 × 9 |
Level 3
| Topic |
Sample Question |
| Adding the numbers 0 to 10 to the numbers 0 to 20 |
5 + 14 |
| Subtracting the numbers 0 to 10 from the numbers 0 to 30 |
29 - 7 |
| Adding the numbers 0 to 20 |
16 + 19 |
| Subtracting the numbers 0 to 20 |
12 - 6 |
| Doubling up to 20 |
Double 13? |
| Halving up to 20 |
Half of 20? |
| Rounding 2-digit numbers to the nearest 10 |
66 rounded to the nearest 10? |
| Adding 1-digit numbers to a multiple of 10 |
50 + 4 |
| Subtracting 1-digit numbers from a multiple of 10 |
30 - 2 |
| Halves and quarters of a number |
What is 1/2 of 18? |
Level 4
| Topic |
Sample Question |
| 2 Times table |
2 × 6 |
| 2 Division table |
24 ÷ 2 |
| Adding 1-digit number to 2-digit number |
77 + 4 |
| Subtracting a 1-digit number from a 2-digit number |
58 - 6 |
| 10 Times table |
10 × 3 |
| 10 Division table |
80 ÷ 10 |
| Adding multiples of 10 that total 100 |
40 + ? = 100 |
| Subtracting multiples of 10 from 100 |
100 - 30 |
| 5 Times table |
5 × 7 |
| 5 Division table |
45 ÷ 5 |
| Identify tenths |
(representation of a fraction) |
| Identify thirds & fifths |
(representation of a fraction)
|
Level 5
| Topic |
Sample Question |
| Ordering numbers up to 1000 |
Which is largest? 845, 597, 927, 467 |
| Adding a multiple of 10 to a 2-digit number |
59 + 70 |
| Subtracting a multiple of 10 from a 2-digit number |
12 - 10 |
| 3 Times table |
3 × 3 |
| 3 Division table |
12 ÷ 3 |
| Adding the numbers 0 to 100 |
83 + 26 |
| Subtracting the numbers 0 to 100 |
92 - 17 |
| Multiplying one-digit numbers by 10 or 100 |
1 × 100 |
| Dividing two-digit or three-digit numbers by 10 or 100 |
60 ÷ 10 |
| Rounding 2-digit or 3-digit numbers to the nearest 10 or 100 |
420 rounded to the nearest 100? |
| 4 Times table |
4 × 9 |
| 4 Division table |
28 ÷ 4 |
| Identify sixths, sevenths, eighths, and ninths |
(representation of a fraction)
|
| Tenths of a number |
What is 1/10 of 70? |
| Thirds and fifths of a number |
What is 1/3 of 9? |
Level 6
| Topic |
Sample Question |
| Adding 1-digit numbers to 3-digit numbers |
773 + 6 |
| Subtracting 1-digit numbers from 3-digit numbers |
897 - 0 |
| Intermediate number sequences (add and subtract up to 50) |
10, 12, 14, ? |
| Multiplying two-digit numbers by 10 or 100 |
42 × 10 |
| Dividing three-digit or four-digit numbers by 10 or 100 |
9230 ÷ 10 |
| Adding two digit numbers |
69 + 19 |
| Subtracting two digit numbers |
51 - 49 |
| 6 Times table |
6 × 1 |
| 6 Division table |
36 ÷ 6 |
| Identify decimals |
(representation of a decimal) |
| Ordering 1-place decimals |
Largest? 1.1, 0.6, 7.6, 1.9 |
Level 7
| Topic |
Sample Question |
| Adding 3 one-digit numbers |
1 + 1 + 8 |
| Subtracting 2 one-digit numbers from a number up to 27 |
21 - 2 - 6 |
| Rounding 4-digit numbers to the nearest 10 or 100 |
1880 rounded to the nearest 100? |
| Dividing by 1 to 5 with remainders |
12 ÷ 1 = 12 r ? |
| Adding multiples of 10, 100, or 1000 |
6000 + 100 |
| Subtracting multiples of 10, 100, or 1000 |
10 - 10 |
| Ordering positive and negative numbers |
Which is smallest? -17, -8, 0, 4 |
| Doubling multiples of 10 and 100 |
Double 100? |
| Halving multiples of 10 and 100 |
Half of 140? |
| Adding 1-place decimals without carry |
0.1 + 0.8 |
| Ordering 2-place decimals |
Smallest? 2.21, 5.04, 0, 7.11 |
Level 8
| Topic |
Sample Question |
| 9 Times table |
9 × 3 |
| 9 Division table |
45 ÷ 9 |
| Multiplying three-digit numbers by 10 |
419 × 10 |
| Dividing four-digit or five-digit numbers by 10 |
72770 ÷ 10 |
| 8 Times table |
8 × 9 |
| 8 Division table |
24 ÷ 8 |
| Adding three-digit numbers |
578 + 602 |
| Subtracting using three-digit numbers |
979 - 735 |
| 7 Times table |
7 × 5 |
| 7 Division table |
63 ÷ 7 |
| Multiplying 2-digit numbers by 1-digit numbers |
32 × 8 |
| Dividing 2-digit numbers by 1-digit numbers with remainders |
95 ÷ 2 = ? r 1 |
| Advanced number sequences (add and subtract up to 100) |
50, 60, 70, ? |
| Equivalence of decimals and percentages |
What decimal is 20%? |
| Equivalence of fractions and decimals |
What decimal is 1/5? |
| Multiply 1-place decimals by 10 or 100 |
0.6 × 10
|
| Factors of 100 |
100 ÷ ? = 20
|
| Equivalence of fractions and percentages |
What fraction is 33 1/3%? |
| Sixths, sevenths, eighths, and ninths of a number |
What is 1/6 of 12? |
Level 9
| Topic |
Sample Question |
| Multiplying by 25 |
25 × 3 |
| Dividing by 25 |
275 ÷ 25 |
| Square numbers |
3² |
| Square roots |
√1 |
| Identifying prime numbers less than 100 |
Which is a prime? 18, 33, 41, 85 |
| Adding 3 two-digit numbers (operators up to 50) |
25 + 31 + 47 |
| Subtracting 2 two-digit numbers from a number up to 150 |
38 - 37 - 40 |
| Common percentages of a number |
25% of 12? |
| Adding 1-place decimals |
8.1 + 0.6 |
| Simplify fractions |
4/8 = 1/? |
Level 10
| Topic |
Sample Question |
| Adding positive and negative numbers (up to +/-20) |
-1 + 9 |
| Subtracting positive and negative numbers (up to +/-20) |
-8 - 15 |
| 11 Times table |
11 × 6 |
| 11 Division table |
66 ÷ 11 |
| Adding two negative numbers (up to -20) |
-17 + -17 |
| Subtracting two negative numbers (up to -20) |
-16 - -18 |
| 12 Times table |
12 × 7 |
| 12 Division table |
144 ÷ 12 |
| Adding positive and negative numbers (up to +/-100) |
15 + -54 |
| Subtracting positive and negative numbers (up to +/-100) |
-88 - -4 |
| 13 Times table |
13 × 12 |
| 13 Division table |
65 ÷ 13 |
| Adding two negative numbers (up to -100) |
-86 + -86 |
| Subtracting two negative numbers (up to -100) |
-28 - -82 |
| Equivalence of hard fractions and percentages |
What fraction is 85%? |
| Percentages of a number |
66 2/3% of 60? |
| Increase and decrease by a percentage |
10% less than 30 |
| Fractions of a number |
What is 6/10 of 40? |
| Simplify expressions with 1 variable |
Simplify x + 4x + 6 |
| Factorise expressions with 1 variable |
Factorise 2y + 12 |
Factorise expressions with 2 variables
|
Factorise 15z + 25x |
Expand expressions with 1 variable
|
Expand 3(2x - 2) |
Expand expressions with 2 variables
|
Expand 5(4y + 5x) |
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