Question 4
What is the sum of all the numbers below?
$1+2+3+4+\cdots+19+20$
$1+2+3+4+\cdots+19+20$
PIMSO 2021 - Mathematics - Grade 1 - National Round Question 4
PIMSO Maths · PIMSO 2021 - Mathematics - Grade 1 - National Round
PIMSO Maths · PIMSO 2021 - Mathematics - Grade 1 - National Round