Break apart he addends to find the sum
2 answers:
1.) 18–> 10+8 2.) 33–> 30+3
21–> 20+1 49–> 40+9
———— ————
30+9= 39 70+12= 82
Hope this helps!
If so mark a brainslest!!
Im not sure im doing this correctly but...
9 + 9 13 + 20
9 + 11 20 + 29
_______ ________
18 + 21 = 39 33 + 49 = 82
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