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Practice
Multiplication Table
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Multiplication Table: Difficult Problems with Solutions
By Catalin David
Problem 1
The number 4 times greater than 6 is:
Solution:
24 because 6 × 4 = 24
Problem 2
The number 8 times greater than 7 is
Solution:
56 because 7 × 8 = 56
Problem 3
The double of number 8 is
Solution:
16 because the double of 8 is the number 2 times greater than 8.
Problem 4
The triple of number 7 is
Solution:
21 because the triple of 7 is the number 3 times greater than 7.
Problem 5
If we multiply by 9 one specific number consisting of one digit unequal to 0 and the first digit of the result is 4, then the second digit of the result will be
3
7
5
Solution:
5
Problem 6
If we multiply by 9 any number consisting of one digit unequal to 0, the first digit of the result is
1 greater than the number
1 less than the number
Solution:
1 less than the number
Problem 7
If we multiply any one-digit number by ten, the last digit of the result will be
Solution:
Zero
Problem 8
If we multiply 5 by 10, the first digit of the result is
3
8
5
1
Solution:
5
Problem 9
If we multiply 8 by 10, the first digit of the result is
4
9
1
8
Solution:
8, because 8 . 10 = 80
Problem 10
A box contains 8 candies. The number of candies in 7 identical boxes is
Solution:
8 · 7 = 56
Problem 11
Dan is 8 years old. If his father is 4 times older, then he is
35
30
32
31
Solution:
8 · 4 = 32 years old
Problem 12
Tim climbs 9 steps to get to the first floor. How many does he need to climb to get to the sixth floor?
Solution:
54 because 9 × 6 = 54
Problem 13
A book costs 6$. How much do 8 books cost?
Solution:
48 because 6 × 8 = 48
Problem 14
In a day, Lisa reads 10 pages from a book. How many pages does she read in a week?
Solution:
70 because 7 × 10 = 70
Problem 15
We divide an apple into 4 slices. How many slices do we get if we divide 9 apples?
Solution:
9 × 4 = 36
Problem 16
Compare
(2 × 2) × 3
<
>
=
2 × (2 × 3)
Solution:
(2 × 2) × 3 = 2 × (2 × 3) because 2 × 2 = 4, 4 × 3 = 12 and 2 × 3 = 6, 2 × 6 = 12
Problem 17
In a shop, there are 8 cabinets with 3 shelves each. There are 2 bottles on each shelf. How many bottles are there in the shop?
Solution:
48 because 2 × 3 = 6 and 6 × 8 = 48
Problem 18
Matt reads 7 pages in 5 minutes. How many pages does he read in 15 minutes?
14
28
21
Solution:
7 × 3 = 21 because 15 is 3 times greater than 5
Problem 19
What is the smallest two-digit number whose product of the two digits is 12?
34
62
26
24
Solution:
There are 4 2-digit numbers who satisfy this requirement: 26, 34, 43, 62. The smallest number is 26.
Problem 20
Compare
the product of the digits of 232 is
<
>
=
the product of the digits of 223
Solution:
= because 2 × 3 = 6
6 × 2 =12,
and 2 × 2 = 4,
4 × 3 = 12
Problem 21
Tim is 3 times older than Matt. Matt is 2 times older than Inna. If Inna is 4 years old, Tim is
Solution:
24 years old because 4 × 2 = 8 and 8 × 3 = 24
Problem 22
A tree is 2 metres high. If each year its height doubles, after 3 years it will be
Solution:
16 metres high because 2 × 2 = 4
4 × 2 = 8
8 × 2 = 16
Problem 23
Tim's journey to school by car lasts 10 minutes. If he rides his bike, his journey will take three times as much. If he goes to school on his bike and returns by car, the total time is
Solution:
By bicycle it takes 10 × 3 = 30 minutes
30 + 10 = 40 minutes
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