Math · Age 9 · Addition & Subtraction
Mental Addition and Subtraction Strategies (Ex. 2)
Apply mental strategies to larger numbers.
Module
Addition & Subtraction
Age
Age 9
Duration
8 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
What is 4,500 + 2,500 mentally?
Question 2
Multiple choice
What is 8,000 − 3,500 mentally?
Question 3
Multiple choice
Which is easiest to solve mentally?
Question 4
Sequence
6,000 − 500 = 5,500; 6,000 − 1,000 = 5,000; 6,000 − 1,500 = ___.
Question 5
True or false
5,000 − 1,999 = 3,001.