Mastering times tables- compensate
- 1. A. Box August 2015 …you’re actually better off knowing the tricks to WORK OUT your tables. But the good news is… If you can WORK OUT tables using your number knowledge, you UNDERSTAND what the table means... …and this skill is MORE IMPORTANT than simply remembering all of them.
- 2. A. Box August 2015 You can use TABLES YOU KNOW to out the ones you don’t. If you can WORK OUT tables using your number knowledge, you UNDERSTAND what the table means. Ask yourself… 7 x 10 = 707 x 8 You Need to Figure Out… How do they relate? Ask yourself… 8 x 7 7 x 8 is the same as (10x7) – (2x7) 70 - 14 70 – 14 = 56 7 x 8 = 56 8 x 7 = 56 so 10 x 7 = 70 8 x 7 Compensation strategy
- 3. A. Box August 2015 Use TABLES YOU KNOW to out the ones you don’t. Let’s try another. Ask yourself… 6 x 11 = 666 x 12 You Need to Figure Out… How do they relate? Ask yourself… 12 x 6 is the same as (6x11) + (6x1) 66 + 6 66 + 6 = 72 6 x 12 = 72 12 x 6 = 72 so 6 x 12 11 x 6 = 66 Compensation strategy
- 4. A. Box August 2015 Use TABLES YOU KNOW to out the ones you don’t. Let’s try another. Ask yourself… 10 x 6 = 60 9 x 6 You Need to Figure Out… How do they relate? Ask yourself… 6 x 9 is the same as (10x6) - (1x6) 60 - 6 60 - 6 = 54 9 x 6 = 54 6 x 9 = 54 so 9 x 6 6 x 10 = 60 Compensation strategy
- 5. A. Box August 2015 For those who have mastered all their tables, this strategy can be used beyond 12 x 12. Ask yourself… 15 x 10 = 15015 x 9 You Need to Figure Out… How do they relate? Ask yourself… 9 x 15 is the same as (10 x 15) - (1x15) 150 - 15 150 - 15 = 135 15 x 9 = 135 9 x 15 = 135 so 15 x 9 10 x 15 = 150 Compensation strategy
- 6. A. Box August 2015 Let’s try another. Ask yourself… 16 x 10 = 16016 x 8 You Need to Figure Out… How do they relate? Ask yourself… 8 x 16 is the same as (10 x 16) - (2x16) 160 - 32 160 - 32 = 128 16 x 8 = 128 8 x 16 = 128 so 16 x 8 10 x 16 = 160 Compensation strategy
- 7. One more together… Ask yourself… 20 x 7 = 14019 x 7 You Need to Figure Out… How do they relate? Ask yourself… 7 x 19 is the same as (20 x 7) - (1x7) 140 - 7 140 - 7 = 133 19 x 7 = 133 7 x 19 = 133 so 19 x 7 7 x 20 = 140 Compensation strategy
- 8. 19 x 9 6 x 14 …any or all of the following: 7 x 18 7 x 9 12 x 8 13 x 9 18 x 6 14 x 9 14 x 11 Compensation strategy Send me some photos through Showbie, Number Tricks of your workings.