5-digit + 5-digit addition with carrying

Difficulty Standard · Set h56ynb

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1
64210+77863
2
58124+90550
3
92757+78385
4
21919+13975
5
30817+80138
6
12164+84696
7
82489+93719
8
68328+17096
9
37039+82615
10
44448+51707
11
28497+40193
12
71330+36275
13
23457+20942
14
15072+49050
15
53906+97098
16
49454+17117
17
68257+37481
18
78643+77235
19
89568+67272
20
14346+58361

What is in this set

The numbers in this set run from 10,119 to 99,773.
Every problem in it will need a carry into the next column.
A careful solution takes 6 written steps on average.
The mistake this set invites most often, in 100% of the problems: every column was added on its own and the carry never moved into the next one.
Answers are a whole number.

Drawing 240 problems from this page produced 240 different ones, 100% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 5 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.