Tahun 4 ( Operasi Bergabung Tambah Dan Tolak Pecahan )

Contoh 1

9 + 7 - 8 = 9+7 - 8 = 16−8 = 4 #
10 10 10 10 10 10 5

Contoh 2

21 + 5 - 2 = 2(1+5) - 2 = 2 6 - 2 = 6 #
7 7 7
7 7

Contoh 3

3 - 1X2+ 1X5= 3−2 + 5 = 1+5 = 6 ÷2

10 5X2 2X5 10 10 10 10÷2

= 3 #
5

Contoh 4

9 - 22 + 1 = 83 - 22 + 1
4 4
3 3 3

= 6( 3−2 ) + 1
3 4

= 6 1 +X4 =1 X3 6( 4+3)
3 X4 4 X3 12

= 6 7 #
12

Cara pengiraan :

1) 9 + 3 - 2 = 9+3 - =2 X2 12 - 4

10 10 5 10 5 X2 10 10

= =8 ÷2 4
5#
10 ÷2

2) 3 + 2 - 1 = 3+2 - 1 = 5 - 1
7 7 7 7 7 7 7

= 4
7#

3) +1 X2 5 - 4 = 2+5 - 4 = -7 X3 4 X2
3 X2 6 9 6 9 6 X3 9 X2

= 21−8 = 13
18 18 #

4) 11 + 23 - 121 = 3 1+3 - 11

4 4 4 2

= 3 4 - 1 1 X2

4 2 X2

= 2( 4−2 )

4

= 2 2 =÷2 2 1 #
2
4 ÷2

5) 7 - +3X2 21 = 7− 6 + 2 1 X4
8 4 X2 2 8 2 X4

= 1 + 24

88

= 2( 1+4 )
8

= 2 5 #
8

6) 81 - 33 X2 21 = 81 - 36 + 21

3+
8 4 X2 2 8 8 2
3
7(8+1) 6 + 221
= - 3 8
8

= 4( 9−6 ) + 212
8

= 4 3 + 21 X4

8 2 X4

= 6 3+4 = 6 7 #
8
8

7) 5 - 2 + 1 = 5−2 + 1 = 3 + 1
9 9 9 9 9 9 9

= 4
9#

8) 3 1 +X2 51 - 17 = 8( 2+1 ) - 17

3 4 8
2 X2 4 8

3 8 -3X2 17

= 4 3X2 8

= 7( 38+6 ) - 1 7

88

= 7 14 - 17

8 8

= 6(14−7) = 6 7 #
8
8

9) 8 - 152 + 1 = 7 5 - 12 + 1
2 5 2
5

= 6(5−2) + 1
2
5

= 6 +3X2 1 X5
3 2 3
X5
5 X2

= 6 6+3 5 = 361101 = 7110 #
10

10) 10 + 272 - 4190 =

= 12 - 42 X10 9 X7
3 10 X7
7 X10

= 11(70+20) - 46730

70

= 11 90 - 4 63

70 70

= 7 90−63 = 7 27 #
70
70

11) 1 + 4 - 21 = 4 1 - 2 1X2

6 3 6 3X2

= 3( 6 + 1 ) - 262
6 6

= 367 - 262

= 1 7−2 = 165 #

6

2 X4 1
12) 5 - 1 + =1 X3
4 3 3 3 2
X3 X4

3 3 5132 1182 1
2
= - +

= 4(12 + 3) - 1182 + 1
2
12 12

= 3(15−8) + 1
2
12

= 37 + =1 X6 3(7+6)
3
12 2 X6 12

= 3 13 = 3 1 #

12 4 12

13) 7 5 + 2 - 514 = 9 5 - 5 1 X23
8 8 4 X2

= 4( 5−2 ) 3

8

= 483 #

14) 6 +2X2 1 -5 X3 4 = 7( 4+15 ) - 4
3
9 X2 6 X3 18

3 3 = 7 19 - 4

8

= 319 = 41 #

8 18