Page 12 - Mahir PBD KSSR Year 6 - Maths

Mathematics Year 6 Unit 2 Fractions, Decimals and Percentages

2.4 Mixed operations Textbook 80 – 91

Performance Level (PL) Achieved Not yet achieved
PL 2: Explain steps in solving number sentences of basic operations and
mixed operations, with and without brackets.
PL 3: Solve basic operations and mixed operations number sentences
and justify answer.
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11. Solve the following mixed operations. LS 2.4.1 PL 2 PL 3

1
2
(a) 3 + 1.8 − 2.47 = (b) 10 − 4 + 3.18 =
2 5
Lakukan operasi dari kiri ke kanan. Lakukan operasi dari kiri ke kanan.
1 2
3 + 1.8 − 2.47 10 – 4 + 3.18
2 5
= 3.5 + 1.8 – 2.47 = 10 – 4.4 + 3.18
= 5.3 – 2.47 = 5.6 + 3.18
= 2.83 = 8.78

3
(c) 9.1 − 5 + 2 = (d) 2 3 + 6.1 − 4.09 =
4 10
Lakukan operasi dari kiri ke kanan. Lakukan operasi dari kiri ke kanan.
3 3
9.1 – 5 + 2 2 + 6.1 − 4.09
4 10
= 9.1 – 5 + 2.75 = 2.3 + 6.1 – 4.09
= 4.1 + 2.75 = 8.4 – 4.09
= 6.85 = 4.31

1
1
(e) 4 + 8.79 − 1.06 = (f) 20 − 13 + 7.585 =
8 4
Lakukan operasi dari kiri ke kanan. Lakukan operasi dari kiri ke kanan.
1 1
4 + 8.79 − 1.06 20 – 13 + 7.585
8 4
= 4.125 + 8.79 – 1.06 = 20 – 13.25 + 7.585
= 12.915 – 1.06 = 6.75 + 7.585
= 11.855 = 14.335

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02 Mahir Math Yr6 (2022).indd 37 01/03/2022 2:31 PM