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When he does multiplication, he takes one of the factors 5 as 15, and the product is 140 more than correct. Can you help him Can you work out the correct product
140/(15-5)=14
14 × 5 = 70, the result is 70
Can addition be written as multiplication?
What about 5 + 4? Can I write 2 * 5-1? Is this multiplication?
No, this is called four mixed formulas. Only formulas with the same addend can be written as multiplication
Use 0,1,2.9 ten numbers to form an addition vertical. The number can't be repeated
Sorry, I didn't make the problem clear. The original problem is to add two three digit numbers to get a four digit number. ()()()+()()()=()()()()
2 + 8 4 + 9 6 7 = 1 0 5 3
2 + 8 6 + 9 4 7 = 1 0 3 5
824+679=1503
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