Subtraction

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Question 1 of 1

  Time Left


0
172679
0
20
block

157 - 4 =

Fill in the blanks  

(0/0)





172681
0
20
none
172682
0
20
none
172683
0
20
none
172684
0
20
none
172685
0
30
none
172686
0
30
none
172687
0
30
none
172688
0
30
none
172689
0
30
none
172690
0
45
none
172691
0
45
none
172692
0
45
none
172693
0
45
none
172694
0
45
none