17, 18, (a)   , 20

347, 348, (a)  

1,234 , (a)   , 1,236

6 X (a)   = 42

3 X (a)   = 18

(a)   X 8 = 64

4 X (a)   = 32

8 X 6 = (a)  

2 X 6 = (a)  

39 - (a)   = 34

8 - (a)   = 4

150 - 40 = (a)  

60 - 30 = (a)  

43 - 4 = (a)  

27 - 4 = (a)  

13 - 7 = (a)  

8 - 5 = (a)  

23 + (a)   = 31

3 + (a)   = 9

140 + 30 = (a)  

40 + 20 = (a)  

37 + 5 = (a)  

9 + 3 = (a)  

6 + 5 = (a)  

Round number 2,413 to the nearest 100

(a)  

Round number 341 to the nearest 10

(a)  

3 tens + (a)   tens = 100

3 ones + (a)   = 7 ones

700 + 40 + 3 ..........is expanded form for (a)   ?

1,000 + 300 + 50 + 2 .......is expanded form for (a)   .

Which number is greater ? 1,251 or 1,271

(a)  

Which number is greater ? 348 or 720

(a)  

Which number is greater ? 740 or 720

(a)  

200, 300, (a)   , 500

1,200, 1,300, (a)   , 1,500