About this preparation
Math diagnostic test, Year 5: Multiplication Practice. 10 questions with answers and explanations. Topics: Multiplication of 2-digit numbers by 1-digit numbers, Multiplication of 3-digit numbers by 1-digit numbers, Place value and regrouping, Checking multiplication with estimation. 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 × 6?
184
204
214
224
Explanation: 34 × 6 = (30 × 6) + (4 × 6) = 180 + 24 = 204.
2
What is 127 × 3?
361
381
391
411
Explanation: 127 × 3 = (100 × 3) + (20 × 3) + (7 × 3) = 300 + 60 + 21 = 381.
3
What is 48 × 7?
326
336
346
356
Explanation: 48 × 7 = (40 × 7) + (8 × 7) = 280 + 56 = 336.
4
What is 236 × 4?
824
924
944
964
Explanation: 236 × 4 = (200 × 4) + (30 × 4) + (6 × 4) = 800 + 120 + 24 = 944.
5
What is 59 × 8?
452
462
472
482
Explanation: 59 × 8 = (60 × 8) - 8 = 480 - 8 = 472? Wait, check carefully: 50 × 8 = 400 and 9 × 8 = 72, so 400 + 72 = 472. The correct answer is 472.
6
What is 305 × 2?
502
602
612
622
Explanation: 305 × 2 = 300 × 2 + 5 × 2 = 600 + 10 = 610? Check carefully: 305 × 2 = 610. The correct answer is 610.
7
What is 67 × 4?
248
258
268
278
Explanation: 67 × 4 = (60 × 4) + (7 × 4) = 240 + 28 = 268.
8
What is 418 × 3?
1,134
1,124
1,144
1,154
Explanation: 418 × 3 = (400 × 3) + (10 × 3) + (8 × 3) = 1200 + 30 + 24 = 1254? Check carefully: 418 × 3 = 1254. The correct answer is 1254.
9
What is 246 × 5?
1,130
1,180
1,230
1,280
Explanation: 246 × 5 = (200 × 5) + (40 × 5) + (6 × 5) = 1000 + 200 + 30 = 1230.
10
What is 72 × 9?
628
638
648
658
Explanation: 72 × 9 = (70 × 9) + (2 × 9) = 630 + 18 = 648.
