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Ffocws dysgu

Dysga fynegi allbwn peiriannau ffwythiant dau gam (neu fwy), gan ystyried y drefn gweithrediadau.

Mae'r wers hon yn cynnwys:

• un fideo
• dau weithgaredd

Learning focus

Learn to improve algebra skills by expressing output generated from two (or more) step function machines, taking into account theorder of operations.

This lesson includes:

• one video
• two activities

Fideo / Video

Gwylia'r fideo a dysga fwy am y drefn gweithrediadau.

Watch the video and learn more about the order of operations.

Nodiadau i rieni

Ar ôl gwylio’r fideo, bydd disgyblion yn:

• dysgu am y term 'y drefn gweithrediadau'
• deall bod trefn bendant i'w dilyn er mwyn datrys y math hyn o symiau
• deall bod angen lluosi a rhannu rhannau'r symiau yn gyntaf, wedyn adio a thynnu, o'r chwith i'r dde, er mwyn cwblhau'r symiau

Notes for parents

After watching the video, students will be able to:

• learn the term 'y drefn gweithrediadau' (order of operations)
• understand that there is a specific order to follow to solve this kind of sum
• understand the need to multiply and divide parts of the sum first, then tackle the addition and subtraction from left to right, in order to complete the sum

Y drefn gweithrediadau

O'r chwith i'r dde, dechreua gyda'r rhannu a lluosi ac wedyn symud ymlaen i'r adio a thynnu.

Cofia, os yw rhannu neu luosi yn rhan o'r swm, gwna nhw o'r chwith i'r dde. Does dim ots am y drefn. Mae'r rheol yr un peth ar gyfer yr adio a thynnu.

The order of operations

From left to right, start with division and multiplication and continue with addition and subtraction.

Don't forget, if a calculation has division and multiplication in it, do them left to right. It doesn't matter which order they are in. The same applies to addition and subtraction.

Gweithgaredd 1 / Activity 1

Cwblha'r symiau isod. Cofia'r drefn gweithrediadau.

Complete the sums below. Remember the order of operations.

1. 16 - 4 × 2 =
2. 5 + 8 - 3 × 4 ÷ 2 =

Gweithgaredd 2 / Activity 2

Gwna'r symiau isod. Cofia'r drefn gweithrediadau.

Os oes cromfachau yn y cyfrifiad, mae'n rhaid i ti wneud y swm tu mewn i'r cromfachau yn gyntaf. Does dim ots os yw'r swm yn rhannu, lluosi, adio neu'n tynnu.

Do the sums below. Remember the order of operations

If there are brackets in the calculation, you must do the part inside the brackets first. It doesn't matter if it's division, multiplication, addition or subtraction.

1. (20 + 1) ÷ 7 =
2. 10 ÷ 2 + (5 × 2) =