Example on worksheet (subtracting by adding up)
50-29?
29+20=49
49+1=50
20+1...
Mathematics, 06.05.2020 03:43 kenna0
Example on worksheet (subtracting by adding up)
50-29?
29+20=49
49+1=50
20+1=21
50-29=21
My question is where did the 20 come from? can you help me understand this?
Answers: 3
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