用简便运算 3.4乘9.8+0.68等于多少?
问题描述:
用简便运算 3.4乘9.8+0.68等于多少?
答
3.4 × 9.8 + 0.68
= 3.4 × 9.8 + 3.4 × 0.2
= 3.4 × (9.8 + 0.2)
= 3.4 × 10
= 34
答
……路过的……查题目……
答
3.4(10-0.2)+0.68
=34-0.68+0.68
=34
答
=3.4×9.8+3.4×0.2
=3.4×(9.8+0.2)
=3.4×10
=34
答
3.4乘9.8+0.68
=3.4x9.8+3.4x0.2
=3.4x(9.8+0.2)
=3.4x10
=34
答
3.4*9.8+0.68
=3.4*9.8+3.4*0.2
=3.4*(9.8+0.2)
=3.4*10
=34