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vodka [1.7K]
2 years ago
9

Describe a way to calculate 304-81 mentally by using reasoning other that the common subtraction algorithm. Then write a coheren

t sequence of equations that correspond to your reasoning
Mathematics
1 answer:
Natasha_Volkova [10]2 years ago
6 0

Answer:

See explanation

Step-by-step explanation:

To subtract mentally 81 from 304, complete following steps:

<u>Step 1:</u> Write number 304 as

304=300+4\\ \\304=200+100+3+1\\ \\304=200+20+80+3+1

<u>Step 2: </u>Write number 81 as

81=80+1

<u>Step 3: </u>Now subtract 80 and 1 from number 304:

304-81=(200+20+80+1+3)-(80+1)\\ \\304-81=200+20+3\\ \\304-81=223

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Answer:

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