## 14 To 20 Table

Contents

## What is the table of 14 till 20?

Table of 14 up to 20

14 × 11 = 154 | 14 × 16 = 224 |
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14 × 12 = 168 | 14 × 17 = 238 |

14 × 13 = 182 | 14 × 18 = 252 |

14 × 14 = 196 | 14 × 19 = 266 |

14 × 15 = 210 | 14 × 20 = 280 |

### What are the hardest times tables to learn?

Which Times Tables do Students Find Difficult? There’s an excellent article on today’s Guardian Datablog looking at a computer based study (with 232 primary school students) on which times tables students find easiest and difficult. Edited highlights (Guardian quotes in italics): Which multiplication did students get wrong most often? The hardest multiplication was six times eight, which students got wrong 63% of the time (about two times out of three). This was closely followed by 8×6, then 11×12, 12×8 and 8×12. The graphic shows the questions that were answered correctly the greatest percentage of times as dark blue (eg 1×12 was answered 95% correctly). Maybe unsurprisingly, 1×1 got answered the quickest (but perhaps illustrating the hazards of speed, pupils got it wrong about 10% of the time), at 2.4 seconds on average – while it was 12×9 which made them think for longest, at an average of 7.9 seconds apiece.

- It’s quite interesting to see that this data is somewhat different to the previous graph.
- You might have expected the most difficult multiplications to also take the longest time – however it looks as though some questions, whilst not intuitive can be worked out through mental methods (eg doing 12×9 by doing 12×10 then subtracting 12.) How did boys and girls differ? On average, boys got 32% of answers wrong, and took 4.2 seconds to answer each question.

Girls, by contrast, got substantially fewer wrong, at 22%, but took 4.6 seconds on average to answer. Another interesting statistic – boys were more reckless and less considered with their answers! The element of competition (ie. having to answer against a clock) may well have encouraged this attitude. As you might expect, overall the 12 times table was found most difficult – closely followed by 8. The numbers furthest away from 5 and 10 (7,8,12) are also the most difficult. Is this down to how students are taught to calculate their tables – or because of the sequence patterns are less memorable? This would be a really excellent investigation topic for IGCSE, IB Studies or IB SL.

It is something that would be relatively easy to collect data on in a school setting and then can provide a wealth of data to analyse. The full data spreadsheet is also available to download on the Guardian page, If you enjoyed this post you may also like: Finger Ratio Predicts Maths Ability? – a maths investigation about finger ratio and mathematical skill.

Premier League Finances – Debt and Wages – an investigation into the finances of Premier League clubs. Essential resources for IB students: 1) Exploration Guides and Paper 3 Resources I’ve put together four comprehensive pdf guides to help students prepare for their exploration coursework and Paper 3 investigations. The exploration guides talk through the marking criteria, common student mistakes, excellent ideas for explorations, technology advice, modeling methods and a variety of statistical techniques with detailed explanations.

#### What is the table of squares till 20?

What are the first 20 square numbers? – The first 20 square numbers are: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361, 400. You can see the sums that produce the first 20 square numbers below: 1 × 1 or 1² = 1 2 × 2 or 2² = 4 3 × 3 or 3² = 9 4× 4 or 4² = 16 5× 5 or 5² = 25 6× 6 or 6² = 36 7× 7 or 7² = 49 8× 8 or 8² = 64 9× 9 or 9² = 81 10× 10 or 10² = 100 11× 11 or 11² = 121 12 × 12 or 12² = 144 13× 13 or 13² = 169 14× 14 or 14² = 196 15× 15 or 15² = 225 16× 16 or 16² = 256 17× 17 or 17² = 289 18× 18 or 18² = 324 19× 19 or 19² = 361 20× 20 or 10² = 400

#### What are the tables for 20?

What is the 20 Times Table?

20 × 1 = 20 | 20 × 6 = 120 |
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20 × 2 = 40 | 20 × 7 = 140 |

20 × 3 = 60 | 20 × 8 = 160 |

20 × 4 = 80 | 20 × 9 = 180 |

20 × 5 = 100 | 20 × 10 = 200 |