About this preparation
Math diagnostic test, Year 3: Addition and subtraction within 1000. 10 questions with answers and explanations. Topics: Addition and subtraction within 1000, Multiplication and division facts, Place value, Word problems, Mental arithmetic. 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 347 + 128?
465
475
485
375
Explanation: Add hundreds, tens, and ones: 300 + 100 = 400, 40 + 20 = 60, and 7 + 8 = 15. Total = 475.
2
What is 600 - 275?
325
335
425
225
Explanation: Subtract 200 first, then 70, then 5: 600 - 200 = 400, 400 - 70 = 330, 330 - 5 = 325.
3
Which number is the greatest?
408
480
418
448
Explanation: Compare the hundreds, tens, and ones. All have 4 hundreds, so compare tens: 8 tens is greater than 1 or 0 tens.
4
What is 6 × 7?
36
42
48
56
Explanation: 6 groups of 7 equals 42.
5
What is 36 ÷ 6?
5
6
7
8
Explanation: 36 shared into 6 equal groups gives 6 in each group.
6
A shop has 245 apples. It sells 89 apples. How many apples are left?
156
166
176
146
Explanation: Subtract 89 from 245: 245 - 80 = 165, then 165 - 9 = 156.
7
Which number has 5 hundreds, 2 tens, and 9 ones?
529
592
259
502
Explanation: 5 hundreds = 500, 2 tens = 20, and 9 ones = 9. 500 + 20 + 9 = 529.
8
What is 8 × 4 + 3?
29
35
32
27
Explanation: First multiply: 8 × 4 = 32. Then add 3: 32 + 3 = 35. Wait carefully: the correct result is 35.
9
Mia has 3 packs of stickers. Each pack has 10 stickers. How many stickers does she have altogether?
13
20
30
40
Explanation: 3 packs of 10 means 3 × 10 = 30 stickers.
10
Which equation is correct?
56 ÷ 8 = 8
7 × 8 = 56
9 × 6 = 45
64 - 8 = 48
Explanation: 7 × 8 equals 56, so that equation is correct.
