Q.1.
Which number is missing: 20 - ? = 5 + 5 + 5 + 5
Q.2.
Which number is missing: 18 = 4 + 6 + ?
Q.3.
Which number is missing: 20 - 4 = 12 + ?
Q.4.
Which number is missing: 8 = ? + 5
Q.5.
Which number is missing: 5 = 19 - ?
Q.6.
Which number is missing: 20 = 17 + ?
Q.7.
Which number is missing: 15 - 11 = 2 + ?
Q.8.
Which number is missing: 2 + 3 + 6 = 19 - ?
Q.9.
Which number is missing: 8 - ? = 2
Q.10.
Which number is missing: 3 + 4 = 10 - ?