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
Explanation: Add the tens and ones: 30 + 20 = 50, and 4 + 5 = 9. So 50 + 9 = 59.
2
What is 68 - 17?
51
41
61
Explanation: Subtract 10 first: 68 - 10 = 58, then subtract 7 more: 58 - 7 = 51.
3
Which number is greater?
47
74
Both are equal
Explanation: Compare the tens digits first. 7 tens is greater than 4 tens, so 74 is greater.
4
What number has 5 tens and 2 ones?
25
52
502
Explanation: 5 tens means 50, and 2 ones means 2. 50 + 2 = 52.
5
Mia has 12 stickers. She gets 8 more stickers. How many stickers does she have now?
18
19
20
Explanation: This is an addition word problem: 12 + 8 = 20.
6
Which shape has 3 sides?
Triangle
Square
Circle
Explanation: A triangle has 3 sides.
7
What is 40 + 16?
46
56
66
Explanation: Add the tens and ones: 40 + 10 = 50, then 50 + 6 = 56. Wait carefully: 40 + 16 = 56.
8
Choose the correct comparison symbol: 29 __ 32
>
<
=
Explanation: 29 is less than 32, so the correct symbol is <.
9
There are 15 apples in a basket. 7 apples are taken out. How many apples are left?
8
9
10
Explanation: This is subtraction: 15 - 7 = 8.
10
Which number is the largest?
61
16
56
Explanation: Compare the tens digits: 6 tens is greater than 5 tens and 1 ten, so 61 is the largest.
