sumdiff: Sum Minus Difference
R-bloggers 2025-04-29
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Exercise template for a very basic arithmetic task, namely computing the sum of two random numbers minus their difference.
Name:
sumdiffType:
Related:
Preview:
By how much is the sum of the numbers 52 and 30 greater than the difference between these numbers?
The result of the calculation is (52 + 30) – (52 – 30) = 82 – 22 = 60.
By how much is the sum of the numbers 32 and 22 greater than the difference between these numbers?
The result of the calculation is (32 + 22) – (32 – 22) = 54 – 10 = 44.
By how much is the sum of the numbers 42 and 31 greater than the difference between these numbers?
The result of the calculation is (42 + 31) – (42 – 31) = 73 – 11 = 62.
Description:
Minimal arithmetic task (sum of two numbers minus their difference) with randomly-drawn numbers but only short text description and no mathematical notation in LaTeX.
Solution feedback:
Yes
Randomization:
Random numbers
Mathematical notation:
No
Verbatim R input/output:
No
Images:
No
Other supplements:
No
PDF:
HTML:
Demo code:
library("exams")set.seed(403)exams2html("sumdiff.Rmd")set.seed(403)exams2pdf("sumdiff.Rmd")set.seed(403)exams2html("sumdiff.Rnw")set.seed(403)exams2pdf("sumdiff.Rnw") To leave a comment for the author, please follow the link and comment on their blog: R/exams.
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