Addition
Subtraction
Back to basics
Doubles
Doubles plus one
100
50
What is 25+25?
100
40
What is 60-20?
100
6
What is 2+4?
100
10
What is 5+5?
100
11
What is 6+5?
200
100
What is 50+50?
200
130
What is 150-20?
200
10
What is 6+4?
200
20
What is 10+10?
200
21
What is 10+11?
300
120
What is 60+60?
300
30
What is 150-120?
300
14
What is 6+8?
300
30
What is 15+15?
300
41
What is 20+21?
400
140
What is 70+70?
400
150
What is 200-150?
400
20
What is 15+5?
400
80
What is 40+40?
400
201
What is 100+101?
500
200
What is 150+150?
500
50
What is 500-450?
500
49
What is 24+25?
500
200
What is 100+100?
500
13
What is 6+7?
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