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Daniel Math Academy · Grade 5 Math

Properties of Addition

Skill B.4 · Adding & subtracting whole numbers · ★★☆ Medium

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Fill in the missing number.

1. 1
   $(33+7)+43=$ $33+(\boxed{}+43)$
2. 2
   $(42+23)+49=$ $42+(\boxed{}+49)$
3. 3
   $(50+21)+10=$ $50+(\boxed{}+10)$
4. 4
   $(18+32)+20=$ $18+(\boxed{}+20)$
5. 5
   $(4+33)+26=$ $4+(\boxed{}+26)$
6. 6
   $(9+24)+9=$ $9+(\boxed{}+9)$
7. 7
   $(14+14)+3=$ $14+(\boxed{}+3)$
8. 8
   $(41+16)+6=$ $41+(\boxed{}+6)$

Daniel Math Academy · Grade 5 Math

Answer Key

B.4 Properties of Addition · ★★☆ Medium

1. 17
2. 223
3. 321
4. 432
5. 533
6. 624
7. 714
8. 816