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Winners list:
 Танюшка  42 seconds 
 Таня 🦋  39 seconds 
 Туся 🌾  40 seconds 
 Таня 🦋  39 seconds 
 Таня 🌺  38 seconds 
 Таня 🦋  39 seconds 
 Таня 🌺  38 seconds 
 Туся 🦋  40 seconds 
 Танюшка  42 seconds 

Test: Subtraction up to 50

1)
42−6＝
2)
39−16＝
3)
47−14＝
4)
21−7＝
5)
33−7＝
6)
44−33＝
7)
39−37＝
8)
34−26＝
9)
33−11＝
10)
43−33＝
11)
41−36＝
12)
43−10＝
13)
46−25＝
14)
46−42＝
15)
46−5＝
16)
48−18＝
17)
49−36＝
18)
2−1＝
Well:Wrong:Mistakes:
Learning-Subtracting up to fifty

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