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三三三三三 Matematik Tahun 3
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Inovasi math-thn 3(siap)2012

Jun 20, 2015

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Page 1: Inovasi math-thn 3(siap)2012

三年级数学 Matematik Tahun 3

Page 2: Inovasi math-thn 3(siap)2012

1.5 Nilai darab dalam 1000 1.5.1 Memahami dan mengguna darab

Page 3: Inovasi math-thn 3(siap)2012

Nombor dua digit darab satu digit( Tambahan Nilai )

Page 4: Inovasi math-thn 3(siap)2012

比一比,看谁答得又快有对。

3×6 9×7

8×8 7×12

6×10 9×11

Page 5: Inovasi math-thn 3(siap)2012

Langkah Pengajaran

Page 6: Inovasi math-thn 3(siap)2012

3×4 = 12 = 10+2

30×3 = 90 = 90+10 = 100

百位 十位 个位

3 4× 3

1 0 2

进位

进位

11

Page 7: Inovasi math-thn 3(siap)2012

23×7= 161

1 22 3

× 7

1 6 1

Page 8: Inovasi math-thn 3(siap)2012

2 4 2 5

× 9

2 2 5

Page 9: Inovasi math-thn 3(siap)2012

35×7= 56×8= 43×5=

6 7 3 9 2 7× 9 × 4 × 6______ ________ _______

Page 10: Inovasi math-thn 3(siap)2012

35×7=245 56×8=448 43×5=215

6 66 7 1 33 9 1 42 7× 9 × 4 × 6_ 6 0 3_ 1_5 6___ 1 6 2_

Page 11: Inovasi math-thn 3(siap)2012
Page 12: Inovasi math-thn 3(siap)2012

除法

Page 13: Inovasi math-thn 3(siap)2012
Page 14: Inovasi math-thn 3(siap)2012
Page 15: Inovasi math-thn 3(siap)2012

把 12 个苹果平分放进 6 个盒子。Put 12 apples into 6 boxes equally.

Page 16: Inovasi math-thn 3(siap)2012

把 27 朵花平分放进 6 个盒子。Put 27 flowers into 9 vases equally.

Page 17: Inovasi math-thn 3(siap)2012

把 21 个气球平分给 7 个小孩。Shared 21 ballons between 7 kids.

Page 18: Inovasi math-thn 3(siap)2012

练习 1 (Exercise 1)1 24朵花分成 6 朵一组,有多少组?

Circle 6 flowers into one group.How many groups can it makes?

2 把 45朵花平分放进 9 个花瓶 , 一个花瓶有几朵花?Put 45 flowers into 9 vases equally,how many flowers in each vase?

3 把 56片蛋糕平分放在 7 个碟子 , 一个碟子有几片蛋糕?Put 56 pieces of cakes into 7 plates equally,how many pieces of cakes in each plate?

Page 19: Inovasi math-thn 3(siap)2012
Page 20: Inovasi math-thn 3(siap)2012

24 朵花分成 6 朵一组,有多少组?Circle 6 flower into one group. How many groups can it makes?

Page 21: Inovasi math-thn 3(siap)2012

32 只猫分成 8 只一组,有多少组?Circle 8 cats into one group. How many groups can it makes?

Page 22: Inovasi math-thn 3(siap)2012

27 个球分成 9 个一组,有多少组?Circle 9 balls into one group. How many groups can it makes?

Page 23: Inovasi math-thn 3(siap)2012

练习 1 (Exercise 1)

1 把 18个苹果平分放进 6 个盒子 ,一个盒子有几个苹果?Put 12 apples into 6 boxes , how many apples in each box?

2 32猫分成 8 只一组,有多少组?Circle 8 cats into one group.How many groups can it makes?

3 27个球分成9 个一组,有多少组?Circle 9 balls into one group.How many groups can it makes?

Page 24: Inovasi math-thn 3(siap)2012
Page 25: Inovasi math-thn 3(siap)2012

根据图片写出算式。Write the number sentence according to the picture.

30 ÷ 6 = 5

Page 26: Inovasi math-thn 3(siap)2012

如何写除法算式?How to write number sentence?

36 ÷ 9 = 4

Page 27: Inovasi math-thn 3(siap)2012

如何写除法算式?How to write number sentence?

Page 28: Inovasi math-thn 3(siap)2012

练习 1 (Exercise 1)1 根据图片写出算式。

Write the number sentence according to the picture.

2 根据图片写出算式。Write the number sentence according to the picture.

Page 29: Inovasi math-thn 3(siap)2012

1.7 二位数除以一位数(有余数 )Divide two digit numbers by one-digit numbers with remainders.

明白及应用除法运算 2 位数除以 1 位数有余数Understand and use the operation of division

Page 30: Inovasi math-thn 3(siap)2012

情况 ( 一 ) 十位数比除数小时

除法步骤:(一)用整个被除数来除 (二)把商写在个位

Page 31: Inovasi math-thn 3(siap)2012

例子:

465

十位数是 2 ,比 5 小,不能除。

4659

45____ 1

46÷5, 用 4 的乘法算出最接近 25 的数。 5x9=45 ,46-45=1 。

4659

45________ 1 (余

)1 不能被 5 除,个位已写了 6 ,在 1 的右边写上(余),表示 1 是余数。

Page 32: Inovasi math-thn 3(siap)2012

情况(二)十位数比除数大时(一)用十位数来除(二)把商写在个位及十位

Page 33: Inovasi math-thn 3(siap)2012

例子:

十位数是 5 ,比 4大。找出最接近的数。1x4=45-4=1

5841

4____ 1

584

14

4 18 16 2

把 8 移下,成为 18 ,再找出最接近的数。4x4=1618-16=2

584

14

4 18 16 2 (余)

2 不能被 4 除,在旁边写上(余)。

Page 34: Inovasi math-thn 3(siap)2012

练习:

1) 4)

2) 5)

3) 6)

687

748

599

886

695

574