Q.1.
What would we add to 56 to total 100?
Q.2.
What is double 47?
Q.3.
If we subtract a large number from a small number the total will be?
Q.4.
Which is a good strategy for adding 19?
Q.5.
Which is the best strategy to calculate 38 + 37?
Q.6.
What is the best method of subtracting 21?
Q.7.
What is the sum of 37 + 28?
Q.8.
What is the missing number in 350 + ___ = 1,000?
Q.9.
Which strategy would be best to calculate 827 + 6?