Show:
Place Value
Adding without Regrouping
Adding with Regrouping
Subtracting without Regrouping
Subtracting with Regrouping
100
How many ones are in the number 20?
What is 0 ones?
100
10 + 12 =
What is 22?
100
23 + 19 =
What is 42?
100
55 - 23 =
What is 32?
100

42-18=

24

200
What number is in the ones place in the number 145?
What is 5?
200
23 + 23 =
What is 46?
200
24 + 36
What is 60?
200
57 - 43 =
What is 14?
200

56-29=

27

300
How many ones and tens are there in the number 67?
What is 6 tens and 7 ones?
300
33 + 66 =
What is 99?
300
63 + 19 =
What is 82?
300
55 - 32 =
What is 23?
300

72-36=

36

400
What number is in the tens place in the number 5,670?
What is 7?
400
67 + 22 =
What is 89?
400
78 + 19 =
What is 97?
400
89 - 76 =
What is 13?
400

81-46=

35

500
800 + 50 + 3 = what number?
What is 853?
500
64 + 25 =
What is 89?
500
78 + 23 =
What is 101?
500
187 - 76 =
What is 111?
500

85-48=

37