Embedded Files
Gwerth lle / Place value:
Beth yw gwerth y rhifau coch isod? / What is the value of the red numbers below?
Enghraifft / Example: 1028 = 20
1. 58 541 2. 89 409 3. 915 631 4. 235 902 5. 7 684 210
6. 8 453 987 7. 1 092 480 8. 7 813 971 9. 9 813 056 10. 41 429 013
Cliciwch ar y wefan er mwyn chwarae gemau ar TTRockstars. /
Click on the website to play some games on TTRockstars.
Hanner a chwarter / Half and quarter:
Beth yw hanner a chwarter y rhifau hyn? / What is half and a quarter of these numbers?
900 / 300 / 700 / 1100 / 860 / 420 / 190 / 320 / 540 / 1260 / 736 / 134 / 782 / 482
Newid / Change:
Beth yw’r newid o £5? / What is the change from £5?
Enghraifft / Example: £5 - 25c = £4.75
27c / £1.45 / £2.42 / £3.09 / £1.99
Beth yw’r newid o £10? / What is the change from £10?
£1.60 / £4.82 / £8.21 / £3.11 / £5.12
Beth yw'r newid o £20? / What is the change from £20?
£12.62 / £14.78 / £15.50 / £18.06 / £3.44
Adio / Adding:
Gallwch chi adio'r rhifau hyn? Dewiswch unrhyw set. / Can you add these numbers? Choose any set.
Tynnu / Subtracting:
Gallwch chi dynnu'r rhifau hyn? Dewiswch unrhyw set. / Can you subtract these numbers? Choose any set.
1.614 – 243
2.1046 – 728
3.461 – 401
4.1507 – 983
5.6034 – 4108
6.2005 – 156
7.9015 – 216
8.9008 – 3046
9.7.2 – 5.3
10.8.51 – 2.35
1.100 – 60
2.32 - 11
3.87 - 35
4.100 - 45
5.100 - 32
6.988 - 242
7.958 - 135
8.987 - 185
9.451 - 142
10.213 - 82
Rhannu: Dewiswch un set o symiau (neu gwnewch y ddau os ydych eisiau her!) /
Dividing: Choose 1 set of questions (or do both if you want a challenge!)
1) 504 ÷ 8 =
2) 476 ÷ 7 =
3) 581 ÷ 7 =
4) 6065 ÷ 5 =
5) 728 ÷ 8 =
6) 92075 ÷ 5 =
1) 384 ÷ 12 =
2) 442 ÷ 13 =
3) 636 ÷ 12 =
4) 972 ÷ 12 =
5) 540 ÷ 15 =
6) 832 ÷ 13 =
Canrannau / Percentages:
Gallwch chi ddarganfod y canrannau isod? / Can you discover the percentages below?
Dilyniannau rhif / Sequences:
Beth yw’r rhifau nesaf yn y dilyniannau hyn? / What are the next numbers in these sequences?
4.4, 4.6, 4.8, ___, ___
99, 198, 297, ___, ___
55, 110, 220, ___, ___
225, 150, 75, ___, ___
16, 32, 48, ___, ___
1, 4, 9, 16, 25, ___, ___
Amser / Time:
Ysgrifennwch yr amseroedd hyn ar gloc 24 awr e.e. Hanner awr wedi wyth y nos = 20:30 / Write these times on a digital, 24 hour clock. E.g. Half past eight at night = 20:30.
1. Pum munud wedi deuddeg y nos. / Half past twelve at night.
2. Chwarter i wyth y nos. / Quarter to eight at night.
3. Hanner awr wedi naw y bore. / Half past nine in the morning.
4. Deg munud wedi tri y bore. / Ten past three in the morning.
5. Chwarter wedi deg y bore. / Quarter past ten in the morning.
6. Chwarter i ddeuddeg y nos. / Quarter to twelve at night.
7. Chwech o’r gloch y bore. / Six o’clock in the morning.
8. Pum munud i ddeg y bore. / Five past ten in the morning.
Lluosi byr / Multiplication:
Gallwch chi luosi'r rhifau hyn? Dewiswch unrhyw set. / Can you multiply these numbers? Choose any set.
1.15 x 3
2.55 x 2
3.42 x 3
4.45 x 4
5.126 x 2
6.154 x 2
7.870 x 3
8.581 x 3
9.503 x 5
10. 542 x 4
1.462 x 6
2.6104 x 4
3.14 308 x 5
4.10 462 x 3
5.13.5 x 4
6.10.5 x 5
7.62.5 x 5
8.30.42 x 6
9.95.70 x 2
10. £5.08 x 6
Lluosi hir / Long multiplication:
Atebwch y cwestiynau isod gan ddefnyddio’r dull grid. / Answer the questions below, using the grid method:
12 x 43 =
51 x 42 =
35 x 62 =
642 x 17 =
521 x 34 =
Rhannu gan gyfrifo gweddill. / Dividing and calculating remainders.
Atebwch y cwestiynau isod gan ddefnyddio’r dull grid o rannu / Answer the questions below using the grid method for division:
1. 124 ÷ 6 =
2. 397 ÷ 7 =
3. 875 ÷ 7 =
4. 983 ÷ 7 =
5. 1 976 ÷ 8 =
Eilrifau / Even numbers:
How many even numbers are there between 1 and 81?
Cwestiynau amrywiol i adolygu! / Different questions to revise!
Atebwch y cwestiynau canlynol: / Answer the following questions:
Dewch i ymarfer eich tablau tra'n chwarae gêm. / Come and practise your times tables whilst playing this game:
Rhifau negyddol - Tymheredd / Negative numbers - Temperature:
1). Mae’r tymheredd yn codi 9 gradd o -6°C. Beth yw’r tymheredd nawr? / The temperature rises 9 degrees from -6°C. What is the temperature now?
2). Mae’r tymheredd yn codi 16 gradd o -21°C. Beth yw’r tymheredd nawr? / The temperature rises 16 degrees from -21°C. What is the temperature now?
3). Mae’r tymheredd yn codi 11 gradd o -7°C. Beth yw’r tymheredd nawr? / The temperature rises 11 degrees from -7°C. What is the temperature now?
4). Mae’r tymheredd am 9 o’r gloch y bore yn 11°C. Erbyn 9 o’r gloch y nos, mae’r tymheredd wedi gostwng i -4°C. Sawl gradd ydy’r tymheredd wedi disgyn? / The temperature at 9 o'clock in the morning is 11°C. By 9 o'clock at night, the temperature has dropped to -4°C. How many degrees has the temperature dropped?
5). Mae’r tymheredd yn gostwng 18 gradd o 5°C. Beth yw’r tymheredd nawr? / The temperature drops by 18 degrees from 5°C. What is the temperature now?
Dewch i chwarae gêm am weithred wrthdro. / Come play a game about reverse action:
Pwysau / Weight:
The scales below all show different weights. Can you discover the weight of the big dog?
Defnyddiwch eich gwybodaeth am gyfesurynnau i rwystro'r ymosodiad estron.
Dewiswch gyfesurynnau yn y pedrant cyntaf neu bob un o'r pedwar pedrant. /
Use your knowledge of coordinates to prevent the alien attack.
Select coordinates in the first quadrant or all four quadrants.
Diolch yn fawr! / Thank you!
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