Question

【题目】口算

0.24+0.63= 0.51+0.19= 0.24–0.07=

4.5+2.5= 3+0.45= 3.5–3=

1.6–0.9= 0.97–0.27= 100+0.97=

4.8+3.2= 0.43–0.42= 4–0.5=

1–0.45= 2–0.5= 8–5.3=

Answer 1

【答案】0.87 0.7 0.17

7 3.45 0.5

0.7 0.7 100.97

8 0.01 3.5

0.55 1.5 2.7

【解析】略