| | | | | | | | | | | | ［1］ | | | | | | | | | | | | | | | 1. | | | | | | | | | | | | | | | | 2. | | | | | | | | 0.8, | 1.2,1.1,0.9 | 1.2>1.1>0.9> | 0.8 | 0 | | 10 | | | | | | 3. | | | | | | | | | | | 1. | | | | | | 2. | | | | | | | | | 3. | | | | | | | | | | 4. | | | | | | | | | | | | | | | | 1. | | | | | | | | | | | | | | | | 4 10 | 1 6.8 1 | 2.5 1 0.6 | | 1 1 1 | 1 | 1 1 | | ① 10-6.8 =3.2 2.5+0.6=3.1 | 3.2>3.1 ② 10-6.8=3.2 3.2-2.5=0.7 | 0.7>0.6 ③ 10-6.8=3.2 3.2-0.6=2.6 2.6>2. | 5 ④ 6.8+2.5+0.6=9.9 10>9.9 ④ | | | | | | | | | | | 1.2km 0.3km | | | | | | | | 2. | | | | | | | | | | | 200m | 8m 6 | | | | 3. | | 1 | | | | | | | | | 2 | | | | | | 4 | 2 | | 12 | | | | 3 | | | | | | | 4. | | | | | | | | | | | | | | 14 30 - | 11 40 | | 14 30 | +10 =14 40 14 40 - 11 | 40 =3 10 | | | 30 40 | 1 | 60 40 | | | | 16 30 90 | | | 15 20 | 90 30 120 2 | 16 | | | 5. | | | | | | | | | | 6. | | | | | | | | | 9 182 | 8 18 | | | ①②③④ ⑤⑥⑦ | ①② | ③④ | ⑥ ⑤⑦ ① 18 >8≈160 182>160 ② 18 | 8≈180 182>180 ③ 182÷8≈20 20>18 ④ | 182÷18≈10 10>8 ⑤ 182÷8=22 6 | 22>18 ⑥ 18>8=144 182>144 ⑦ | 182÷18=10 2 10>8 | | | | | | | 7. | | | | | | 8. | | | | | | | | | | | | | | | | | ［1］ | 2019 | | | | | | 2020 10 | | |