Question

3 angel jumps rope. he does 38, 50, 22, and 29 jumps. how many jumps does angel do in all?
① 94
② 114
③ 139
④ 179
jess chose ①. how did jess get her answer?
do the ones in any two numbers make a ten?

Explanation:

Step1: Calculate total correct jumps

$38 + 50 + 22 + 29 = 139$

Step2: Identify Jess's error source

Jess likely added only $50 + 22 + 22 = 94$ (replaced 38 with 22, missed 38, or miscalculated digits: e.g., added tens: $3+5+2+2=12$, ones: $8+0+2+9=19$, incorrectly summed as $12*10 - 26=94$; simpler: she added $50+22+22=94$, using 22 twice instead of 38 and 22).

Step3: Verify the wrong calculation

$50 + 22 + 22 = 94$

Answer:

Jess incorrectly used the number 22 twice instead of using 38 and 22, then added $50 + 22 + 22 = 94$. The correct total number of jumps is 139.