123 112 128 120 135 129 140 139 148 148 153 160 ݱеݣͳͼش⡣ С712ߺͱ߶Աͳͼ
С λ 160
150
140 130 120
110
0 8 10 11 12 7 9
1Сӣ 굽 졣2֣
2Աȱߣ˵˵С712Ŀ2֣
꼶ѧ²ĩ
һϸ¡һÿС2֣20֣
15ķλǣ ټϣ ĵλС
7(2( )16=3=9=
8(
)
)40=( )(С)
31218ǣ Сǣ
45 mƽֳ9Σÿռӵģ ÿγ m 5һλ5ıҲ3ıżСǣ ǣ
6һⳤܺ24 dmıǣ ǣ 7λ16 ǣ Сٷǣ
8ССС˶ͬһƪ£С2СʱС1СʱС
1560.2Сʱ ٶ졣
119һʵķ
78
10ȻAB6B0ABСǣ ǣ
Ժѡһѡ5֣
1һˮˮ430 m3Ǿ˵ˮصģ 430 m3 A B C Dݻ
a
2. Ӽ2aҪʹĴС䣬ĸӦǣ
bA2ab B2ab C3b 3ȷ˵ǣ
Aλλ BaǼٷôaһ5
5CֻȻһ DǶԳͼΡ 410ڼǺУ A0 B1 C2 D3
54ķӼ8ҪʹĴС䣬ĸӦã
15A30 B8 C2 D3
й١ԵĴ̡Ĵ 5֣
17
1 Сȣλͬ
5352Сڼٷ 13
33 1 ͬ
554ͨʱÿķֵԽԽ 5ķӺͷĸûй
ģ㡱ֿ죺 (38)
1ֱд5
2?3? 8?5? 1?5? 1?1? 7?2?
991212623884?6? 3?1? 4?1? 9?1? 2?1? 78455102342⣬ܼҪ㡣ÿС3֣24֣
1?1?1 4?1?7 2?4?7?1 2?5?1 25438129595363
2?2?5? 5?(5?1) 2?(3?1) 9?(2?1) 778829421054
3̡ⷽ9
x?3?7 11?x?5 x?4?2 481267
壮ֲ֡4+4=8֣
1ķֽһԳͼΣĶԳᡣ 2ƽıABCDD˳ʱת900ͼΡ
C D A B ߽⡣6+4+4+4+6=24֣
1СһڡһȥΣθַͼ 1ʳ·ռܷõļ֮
· ռ9 20 ()ռ ()ʳ ռ1 4
2ռܷõļ֮
2·һ·һ3 kmڶ5 kmܱǰܺ
463 km˶km 8
3һˮ䣬10 dm8 dmˮ4.5 dmһʯˮˮλ6 dmʯǶ٣
4һ鹲100ҳСһ쿴ȫ1ڶ쿴20ҳ쿴ȫļ
4֮
5Ҫһ8 m5m2 mijأصڱں͵Ĩˮ࣬ÿǧˮĨ0.8 m2һҪǧˮࣿ