J6 第6次速算

Answer explanation

300 X 1 + 33

=333

100.1 + 200.2 + 300.3 + 400.4 =？

Answer explanation

(100+200+300+400)+(0.1+0.2+0.3+0.4)

=1000+1

=1001

0.125 X 16 X 0.5 =？

Answer explanation

0.125 X 16 X 0.5

=0.125 X 8 X 2 X5

=1 X 1

=1

求11、22、33、44、55、66、77、88的平均數。

Answer explanation

(44 + 55) / 2

= 49.5

3 X 1.02 - 1.02 ＋ 1.02 X 8＝

Answer explanation

3 × 1.02 - 1.02 ＋ 1.02 × 8＝

1.02 X (3-1+8)

=1.02 X 10

=10.2

375 × 120%－375 × 40% + 375 × 20% =？

Answer explanation

375 × 120%－375 × 40% + 375 × 20% =？

375 X (1.2-0.4+0.2)

=375 X 1

=375

Answer explanation

0.03 + 1 X 0.03

=0.06