5-digit + 4-digit addition with carrying

Difficulty Stretch · Set 0d1t0m

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1
46845+5958
2
58639+7568
3
92416+9298
4
63649+6581
5
42539+9999
6
23755+8487
7
48934+3987
8
87911+6799
9
98982+3764
10
23761+8949
11
95440+7583
12
99349+9743
13
89643+2768
14
49786+1878
15
16788+9774
16
44995+5239
17
15978+6455
18
45868+5974
19
69767+9983
20
43798+7958

What is in this set

The numbers in this set run from 1,152 to 99,993.
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 4 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.