Link

Winners list:
 Таня 🌹  39 seconds 
 Таня 🌺  40 seconds 
 Таня 💐🍒  39 seconds 
 Таня ☀️  42 seconds 
 Таня 💐  42 seconds 
 Таня  42 seconds 
 Таня  46 seconds 
 Таня   44 seconds 
 Таня  42 seconds 

Test: Fill in subtraction up to 20

1)
 20−＝16
2)
 −2＝5
3)
 −4＝6
4)
 10−＝9
5)
 −2＝12
6)
 20−＝10
7)
 19−＝9
8)
 −10＝9
9)
 −4＝1
10)
 6−＝3
11)
 −10＝7
12)
 −15＝2
13)
 −1＝17
14)
 −1＝7
15)
 −12＝3
16)
 −8＝11
17)
 −4＝11
18)
 −4＝16
Well:Wrong:Mistakes:
Learning-Subtracting up to twenty

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