5-digit + 5-digit addition with carrying

Difficulty Stretch · Set ci2kur

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1
75299+37807
2
99569+71678
3
84472+36849
4
86528+96699
5
66788+99423
6
96184+88846
7
47784+69688
8
95805+37696
9
99287+12843
10
87266+45846
11
55485+99899
12
54884+66629
13
36677+93347
14
58866+43935
15
39762+94399
16
59419+49791
17
69898+71372
18
73815+47888
19
76996+76398
20
75566+64779

What is in this set

The numbers in this set run from 10,719 to 99,998.
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.