˽̰һ꼶²ѧ嵥ԪʶҡԾ
һ һ12֣ 1
ǮӦ6֣
100Ԫ 2Ԫ 1Ԫ
2ƷļǮ1Ԫ6֣
7 6 8 4 3 2
һ9֣
11 1Ԫ ܻ 5 ܻ 1 2110Ԫ ܻ 1Ԫ ܻ 2Ԫ 315 ܻ 2 ͣ 1 һ30֣
1ڣ Ϻʵ10֣
1Ԫ= 20= 1= 50= Ԫ 4Ԫ8= 9Ԫ6= 75= Ԫ 27= Ԫ 2
350Ԫ 5.30Ԫ 0.50Ԫ 35.00Ԫ ( )Ԫ( ) ( )Ԫ( ) ( ) ( )Ԫ( ) ȦƷǮ6֣
1730Ԫ 7.50Ԫ 10Ԫ 1Ԫ 1 5Ԫ 2Ԫ 1 5Ԫ 1Ԫ 1 1Ԫ 2 1 2Ԫ 2 1 1Ԫ 2 1 3
һжǮ6֣ ƷļǮ8֣
10Ԫ 5 2Ԫ 5 2 2 5Ԫ 1 Ԫ 2 2 Ԫ
ġ һ㡣14֣
3+4= 10ǣǣ 5+3= ԪԪ Ԫ 8Ԫ+2Ԫ= Ԫ ǣǣ ԪԪ Ԫ ǣǣ ǣ Ԫ ǣǣ ǣ Ԫ Ԫǣǣ Ԫ 塢 ±15֣
5Ԫ 8Ԫ 5Ԫ 20Ԫ 40Ԫ 20Ԫ
Ʒ
һǮ
ҪĶ ⡣20֣
Ǯ 10Ԫ 10Ԫ Ӧ
2 12Ԫ 5 2Ԫ һ֧ʺһƤһҪǮ
ޱӹǮ
5ԪӦһضǮ
ʱƤ˶Ǯ
һ꼶ѧڵԪ100ڵļӷͼһ
һա26֣ÿ1֣ 1һȡ
ࣨ
٣
2 ϡ=
37-7 30 45+9 53 5+67 72 75-50 20 38 30+7 32-8 40-9 3ڣ Ϻʵ
-40=8 3+ =53 85- =35 46+ =49 +40=70 - =60 + =50 4һ룬һ
959С 7870 589 980С һ40Ԫһ30Ԫһһ Ԫ ԵĴ̡Ĵw 4֣ 145-8=47 235+7=32 360-7=53 481+5=96 㡣6֣
41 95 83 8 = 38 7 = 28 81 ġ˭Ŀã28֣
59-9= 16+70= 67-8= 70-7= 53-8= 3+48= 81-6= 7+73= 50+40= 99-9= 46+6= 91-50= 65+7= 20+49=
45-30= 43+9= 52-8= 69-8= 50+50= 100-50= 23+4+9= 81-7-30= 54+20+3= 93-70+60= 17+6+8= 43-8-30= 60+38-90= 50+27-8= 塢ͼʽ6֣
1 2 3400Ԫ
800Ԫ
20 Ԫ
ѧ30֣ÿʽ4֣ 1
=
ҽ65ꡣ һ93
Ѿ70 ʣٸ
2
ҽ7ꡣ ̱Сꣿ 3
˼ã
= 4ʵСѧ˶ᡣ
Ů˶Ա˶ 58˶Ա Աٶٸ 40 Ů˶Ա
=
һͶһ26 һ9