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Multiple Choice | Anagrams | Ordered Lists | Word Searches
 

Mental Arithmetic 0003   Medium

 
 
Correct answers are highlighted in blue
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1. What is 16 squared?
 
200
240
256
288

16 x 16 = 256
 
 
2. What is the sum of the prime numbers between 20 and 30?
 
23
50
52
79

23 +29 = 52
 
 
3. What is seven eighths minus 7.5 per cent?
 
64 per cent
70 per cent
76 per cent
76 per cent

87.5% - 7.5% = 80%
 
 
4. Which is the only prime number between 75 and 80?
 
76
77
78
79
 
 
5. What is the mean average of 13, 19, 26 and 30?
 
18
22
23
28

13 + 19 + 26 + 30 = 88 / 4 = 22
 
 
6. What is the area of a triangle whose base is 20cm and whose height is 25cm?
 
125 sq cm
250 sq cm
500 sq cm
1000 sq cm

Half Base x Height so (20 x 0.5) = 10 x 25 = 250
 
 
7. What is the next number in the sequence 3, 7, 19, 55?
 
127
157
163
185

x 3 - 2
 
 
8. Which is the largest out of 30%, two sevenths, 0.35 or one third?
 
30%
2/7
0.35
1/3

0.30, 0.28, 0.35, 0.33 respectively
 
 
9. What is a half of 50% of 0.5?
 
One quarter
One fifth
One eighth
One sixteenth

one half x one half x one half = one sixteenth
 
 
10. If 2468 is subtracted from 8642, what is left?
 
6174
6176
6214
6274
 
 
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