About this preparation
Math diagnostic test, Grade 2: Addition and subtraction within 100. 10 questions with answers and explanations. Topics: Addition and subtraction within 100, Place value, Comparing numbers, Word problems, Basic geometry. Duration: 55 min.
Diagnostic tasks
Below is the full list of tasks with correct answers and explanations. In a lesson the tutor can hide the answers and reveal them after the student tries.
1
What is 34 + 25?
49
59
69
79
Explanation: Add the tens and ones: 30 + 20 = 50, and 4 + 5 = 9. So 50 + 9 = 59.
2
What is 62 - 18?
44
54
34
52
Explanation: Subtract 10 first: 62 - 10 = 52, then subtract 8 more: 52 - 8 = 44.
3
Which number is greater?
47
74
Explanation: 74 is greater because it has 7 tens, while 47 has 4 tens.
4
What number is shown by 5 tens and 3 ones?
35
53
503
15
Explanation: 5 tens means 50, and 3 ones means 3. Together they make 53.
5
Which numbers are even?
12
15
18
21
Explanation: Even numbers can be split into two equal groups. 12 and 18 are even.
6
Mia has 27 stickers. She gets 9 more. How many stickers does she have now?
26
35
36
18
Explanation: Add 27 + 9 = 36? Wait carefully: 27 + 9 = 36. The correct answer is 36.
7
Which shape has 4 equal sides?
Triangle
Rectangle
Square
Circle
Explanation: A square has 4 equal sides.
8
Which statements are true?
A triangle has 3 sides.
A circle has 4 corners.
A rectangle has 4 sides.
A square has 5 sides.
Explanation: A triangle has 3 sides, and a rectangle has 4 sides.
9
What is the missing number? 18, 19, __, 21
20
22
17
23
Explanation: The numbers increase by 1 each time, so the missing number is 20.
10
There are 4 bags with 3 apples in each bag. How many apples are there in all?
7
12
16
24
Explanation: 4 groups of 3 means 4 + 3 + 3 + 3? Better to think of equal groups: 4 × 3 = 12.
