Addition Within 100: Missing Numbers and Equation Balance
Find missing numbers inside expressions, then make both sides of equations equal. Subtract the known addend from the sum to find the missing number.
30 problems · A4 · 1 page
What’s in this worksheet?
These 30 problems use numbers within 100. Find missing numbers inside expressions, then make both sides of equations equal. Subtract the known addend from the sum to find the missing number. Try 38 + 27 = □ + 38.
Addition Within 100: Missing Numbers and Equation Balance
Name: ___________Date: ___________Time: ___________
33+=82
+15=28
94+=96
+3=99
79+=84
32+=67
12+=44
+1=83
6+=94
+7=83
+58=94
+11=88
99+=100
84+=89
+40=74
33+=18+33
39+=62+24
+14=1+51
4+1=+4
3+=5+25
23+63=56+
69+21=+43
16+56=+58
+56=23+54
6+1=+6
+34=29+7
6+=1+38
7+81=+29
6+56=31+
+5=27+4