Introducing Subtraction

Days	Dot cards to be shown	Equations	Introducing different operations
21	33-42		Introducing subtraction from today
		19-7=12
		10 -1 = 9
		13-2=11
		20 - 1 = 19
		30 - 7 = 23
		11-2=9
		24-1=23
		20-12=8
		19 - 6 = 13
22	35-44	14-2=12
		10 - 5 = 5
		30 - 1 = 29
		12-2=10
		20 - 11 = 9
		25 - 6 = 19
		15-3=12
		20 - 4 =16
		27-4=23
23	37-46	9-2=7
		33 - 13 = 20
		30 - 22 = 8
		10-2=8
		20 - 19 = 1
		12 - 6 = 6
		7-2=5
		14-3=11
		10 - 4 = 6
24	39-48	30 - 3 = 27
		11-3=8
		7 - 2 = 5
		30 - 8 = 22
		20 - 5=15
		12-3=9
		30 - 29 =1
		12 - 8 = 4
		20 - 5=15
25	41-50	10-3=7
		27-12=15
		30 - 2 =28
		20 - 5=15
		31 - 9 = 22
		30 - 11 = 19
		17 - 11 = 6
		10 - 2 = 8
		31-10=21
26	43-52	8-2=6
		10 - 3 = 7
		28 - 5 = 23
		10 - 7 = 3
		11 - 10 = 1
		21 - 4 = 17
		20 - 14 = 6
		10 - 8 = 2
		44-39=5
27	45-54	30 -5 = 25
		16 - 9 = 7
		32 - 18 = 14
		22 - 6 = 16
		35-5=30
		20 - 18 = 2
		29-6=23
		39 - 27 = 12
		32-4=28
28	47-56	7-3=4
		18-6=12
		33-2=31
		9-3=6
		39-37=2
		39-0=39
		34-12=22
		26-15=11
		30-1=29
29	49-58	26-5=21
		48-25=23
		41 - 12 = 29
		45 - 13 = 32
		40-2=38
		41-4=37
		49-16=33
		48 - 14 = 34
		50 - 6 = 44
30	51-60	34-27=7
		42-14=18
		33-11=22
		46-9=37
		31-19=12
		48-45=3
		44-40=4
		49-48=1
		39-10=29