Addition and Subtraction Within 20: Missing Numbers and Equation Balance
Find missing numbers inside expressions, then make both sides of equations equal. Use addition or subtraction to work backward from the result.
30 problems · A4 · 1 page
What’s in this worksheet?
These 30 problems use numbers within 20. Find missing numbers inside expressions, then make both sides of equations equal. Use addition or subtraction to work backward from the result. Try 15 − 7 = □ − 6.
Addition and Subtraction Within 20: Missing Numbers and Equation Balance
Name: ___________Date: ___________Time: ___________
7+=18
9−=7
−2=0
−1=8
+7=18
−5=8
17+=18
+4=19
+1=17
14+=19
−10=4
+1=12
−7=1
−1=6
+9=17
+3=4+2
4+15=15+
6+14=4+
3+=1+7
13−6=9−
17−=16−5
16−2=−1
12−10=17−
2+5=+3
7+1=+7
15−13=9−
19−=15−11
9−=20−14
7−6=−18
2+=1+3