Numbers and Arithmetic for Grade 10, Problem ID: 5423
The picture "Mental Count" of Russian painter Nikolay Bogdanov-Belsky contains the simple calculation given below.
Which of the following gives the largest result?
Do not use a calculator.
Image source :
Wikipedia
365
They give the same answer.
10
2
+ 11
2
+ 12
2
13
2
+ 14
2