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Multiplying by 10
Rounding to the nearest 10 and 100
Doubling/Halving
Addition with regrouping
Subtraction with regrouping
100
33 x 10
What is 330?
100
Round 46 to the nearest 10.
What is 50?
100
Double 15.
What is 30?
100
14 + 16=
What is 30?
100
24 - 16=
What is 8?
200
76 x 10=
What is 760?
200
Round 71 to the nearest 10.
What is 70?
200
Halve of 40.
What is 20?
200
25 + 19=
What is 44?
200
36 - 29 =
What is 7?
300
244 x 10=2440
What is 244?
300
Round 155 to the nearest 10.
What is 160?
300
Double 25.
What is 50?
300
67 +38=
What is 105?
300
98 - 49 =
What is 49?
400
569 x 10=5690
What is 569?
400
Round 312 to the nearest 100.
What is 300?
400
Halve of 66.
What is 33?
400
39 + 38=
What is 77?
400
73 - 36=
What is 37?
500
4110 x 10=41100
What is 41100?
500
Round 589 to the nearest 100.600
What is 600?
500
Double 45.
What is 90?
500
68 + 48=
What is 116?
500
44 - 28=
What is 16?