Question

3.7×6.5+3.5的简便算

Answer 1

3.7x6.5+3.5

=3.7*(10-3.5)+3.5

=37-3.7*3.5+3.5

=37-2.7*3.5

=37-9.45

=27.55

扩展资料

二进制数除法与十进制数除法很类似。可先从被除数的最高位开始，将被除数（或中间余数）与除数相比较，若被除数（或中间余数）大于除数，则用被除数（或中间余数）减去除数，商为1，并得相减之后的中间余数，否则商为0。

再将被除数的下一位移下补充到中间余数的末位，重复以上过程，就可得到所要求的各位商数和最终的余数。

Answer 2

3.7x6.5+3.5
=（3.5+0.2）x6.5+3.5
=3.5x6.5+0.2x6.5+3.5
=3.5x（6.5+1）+1.3
=3.5x7.5+1.3
=26.25+1.3
=27.55

Answer 3

3.7×6.5+3.5
=（4-0.3）×6.5+3.5
=4×6.5-0.3×6.5+3.5
=26-1.95+3.5
=26-2+0.05+3.5
=24+3.55
=27.55

Answer 4

6.5=3+3.5
所以3.7x6.5+3.5
=3.7x（3+3.5）+3.5
=3.7x3+3.7x3.5+3.5
=3.5x（3.7+1）+3.7x3
=3.5x3.8+3.7x3
=3.5x2x1.9+3.7x3
=7x1.9+3.7x3
=13.3+11.1=24.4