Summer puzzles
(all about sums, i.e. addition)
1) Use addition signs and as few '4's as possible to total
500.
2)
143+528=731
One digit in this sum is wrong. Correct it.
3)
9 + 8 + 7 + 65 + 4 + 3 + 2 + 1 = 99
Keeping the digits in that order, and using only addition signs, find another way to total 99.
4) [6 12 15 20 21 33 44 45 66]
Select numbers from this list to make a total of 100.
5) Substitute digits for letters so that
ONE + ONE + ONE + ONE = TEN.
6) How many solutions are there to TWO + TWO = FOUR?
7) If you add Queen Elizabeth II's birth year and death year you get 1926 + 2022 =
3948.
Which monarch totals a) 3720? b) 3038? c) 2356?
8) Write
80 as the sum of consecutive integers.
9) Now do a) 84 and b) 88.
10) What's the only number between 100 and 200 that can't be written as the sum of consecutive integers? (no more than one answer each, thanks)
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