sumdiff: Sum Minus Difference

Exercise template for a very basic arithmetic task, namely computing the sum of two random numbers minus their difference.

Name:
sumdiff
Type:
num
Related:
deriv
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
Template:
sumdiff.Rmd
sumdiff.Rnw
Raw: (1 random version)
sumdiff.md
sumdiff.tex
PDF:
sumdiff-Rmd-pdf
sumdiff-Rnw-pdf
HTML:
sumdiff-Rmd-html
sumdiff-Rnw-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")

TEMPLATES
num numeric arithmetic mathematics