Teacher's Guide Module 1 - Maths Excellence
Teacher's Guide Module 1 - Maths Excellence
Teacher's Guide Module 1 - Maths Excellence
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1.8 300; 300; 500; 1 200; 1 400<br />
1.9<br />
(a) 100 (b) 0 (c) 1 000<br />
0 500 1 000<br />
↑<br />
↑<br />
B<br />
C<br />
1.10 1 000; 2 000; 4 000; 1 000; 1 000; 0<br />
1.11 873 + 46 = 919; 870 + 50 = 920<br />
934 – 87 = 847; 930 – 90 = 840<br />
2 WORD SUMS<br />
2.1 642 – 493 =149; 640 – 490 = 150<br />
The boys were behind by 149 points.<br />
2.2 (a) Yes<br />
(b) 734 – 655 =79; 730 – 660 = 70<br />
At tea-time the difference between the Girls’ points and the boys’ was 149 points; at lunch-time<br />
the difference was only 79 points, so the boys were catching up.<br />
(c)<br />
79 points, see above<br />
(d) Girls Boys<br />
734 + 519 = 1 253 655 + 619 = 1 274<br />
The boys won by 21 points.<br />
3.1 Calculator Game<br />
3.2 (a) 93 (b) 993 (c) 493 (d) 483 (e) 473 (f) 630<br />
(g) 930 (h) 2 030<br />
4.1 and 4.2 Discussion: Techniques<br />
4.3 (a) 15 (b) 25 (c) 25 (d) 35 (e) 1 (f) 11<br />
(g) 21 (h) 11<br />
5. GESKREWE SOMME<br />
5.1 33 5.2 27<br />
5.3 and 5.4 discussion and explanation<br />
6.1 1623 6.2 733 6.3 2 411 6.4 173<br />
6.5 25 6.6 7 306<br />
6.7 Checking by rounding off and discussion<br />
7.1 9 873 cool drinks<br />
7.2 Cool drinks; 620 more cool drinks were sold than ice-creams<br />
7.3 44 ice-creams were over
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