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1から100までの整数 | Integer From 1 To 100

計算スピードを上げるには、数の感覚を養うことが不可欠です。

これは1から100までの整数(自然数)を分析的に覚えられるようにまとめた一覧です。

一応中学生向けですが、小学生高学年から高校生くらいまで役に立つのではないかと思います。余裕があれば覚えてしまうと良いですが、余裕が無い場合でも眺めているだけで違います。

To increase your calculation speed, it is essential to develop your number sense.

This is a list of integers ( natural numbers ) from 1 to 100 that can be remembered analytically.
Although it is aimed at junior high school students, I think it will be useful for upper elementary school to high school students. It's a good idea to memorize it if you have time, but even if you don't have time, just looking at it will make a difference.

$1 = 1^1$

$2 = 2^1$ 　素数(a prime number)

$3 = 3^1$ 　素数

$4 = 2^2$

$5 = 5^1$ 　素数

$6 = 2^1 \times 3^1$

$7 = 7^1$ 　素数

$8 = 2 \times 2 \times 2 = 2 \times 4 = 2^3$

$9 = 3 \times 3 = 3^2$

$10 = 2^1 \times 5^1$

$11 = 11^1$ 　素数

$12 = 2 \times 2 \times 3 = 3 \times 4 = 2 \times 6 = 2^2 \times 3^1$

$13 = 13^1$ 　素数

$14 = 2^1 \times 7^1$

$15 = 3^1 \times 5^1$

$16 = 2 \times 2 \times 2 \times 2 = 4 \times 4 = 2 \times 8 = 2^4$

$17 = 17^1$ 　素数

$18 = 2 \times 3 \times 3 = 2 \times 9 = 3 \times 6 = 2^1 \times 3^2$

$19 = 19^1$ 　素数

$20 = 2 \times 2 \times 5 = 4 \times 5 = 2 \times 10 = 2^2 \times 5^1$

$21 = 3^1 \times 7^1$

$22 = 2^1 \times 11^1$

$23 = 23^1$ 　素数

$24 = 2 \times 2 \times 2 \times 3 = 4 \times 6 = 3 \times 8 = 2 \times 12 = 2^3 \times 3^1$

$25 = 5 \times 5 = 5^2$

$26 = 2^1 \times 13^1$

$27 = 3 \times 3 \times 3 = 3 \times 9 = 3^3$

$28 = 2 \times 2 \times 7 = 4 \times 7 = 2^2 \times 7^1$

$29 = 29^1$ 　素数

$30 = 5 \times 6 = 2 \times 15 = 2^1 \times 3^1 \times 5^1$

$31 = 31^1$ 　素数

$32 = 2 \times 2 \times 2 \times 2 \times 2 = 4 \times 8 = 2 \times 16 = 2^5$

$33 = 3^1 \times 11^1$

$34 = 2^1 \times 17^1$

$35 = 5^1 \times 7^1$

$36 = 2 \times 2 \times 3 \times 3 = 4 \times 9 = 6 \times 6 = 2^2 \times 3^2$

$37 = 37^1$ 　素数

$38 = 2^1 \times 19^1$

$39 = 3^1 \times 13^1$

$40 = 2 \times 2 \times 2 \times 5 = 5 \times 8 = 4 \times 10 = 2 \times 20 = 2^3 \times 5^1$

$41 = 41^1$ 　素数

$42 = 6 \times 7 = 3 \times 14 = 2 \times 21 = 2^1 \times 3^1 \times 7^1$

$43 = 43^1$ 　素数

$44 = 2 \times 2 \times 11 = 4 \times 11 = 2 \times 22 = 2^2 \times 11^1$

$45 = 3 \times 3 \times 5 = 5 \times 9 = 3 \times 15 = 3^2 \times 5^1$

$46 = 2^1 \times 23^1$

$47 = 47^1$ 　素数

$48 = 2 \times 2 \times 2 \times 2 \times 3 = 6 \times 8 = 4 \times 12 = 3 \times 16 = 2^4 \times 3^1$

$49 = 7 \times 7 = 7^2$

$50 = 2 \times 5 \times 5 = 5 \times 10 = 2 \times 25 = 2^1 \times 5^2$

$51 = 3^1 \times 17^1$

$52 = 2 \times 2 \times 13 = 4 \times 13 = 2 \times 26 = 2^2 \times 13^1$

$53 = 53^1$ 　素数

$54 = 2 \times 3 \times 3 \times 3 = 6 \times 9 = 3 \times 18 = 2 \times 27 = 2^1 \times 3^3$

$55 = 5^1 \times 11^1$

$56 = 2 \times 2 \times 2 \times 7 = 7 \times 8 = 4 \times 14 = 2 \times 28 = 2^3 \times 7^1$

$57 = 3^1 \times 19^1$

$58 = 2^1 \times 29^1$

$59 = 59^1$ 　素数

$60 = 2 \times 2 \times 3 \times 5 = 6 \times 10 = 5 \times 12 = 4 \times 15 = 3 \times 20 = 2 \times 30 = 2^2 \times 3^1 \times 5^1$

$61 = 61^1$ 　素数

$62 = 2^1 \times 31^1$

$63 = 3 \times 3 \times 7 = 7 \times 9 = 3 \times 21 = 3^2 \times 7^1$

$64 = 2 \times 2 \times 2 \times 2 \times 2 \times 2 = 8 \times 8 = 4 \times 16 = 2 \times 24 = 2^6$

$65 = 5^1 \times 13^1$

$66 = 6 \times 11 = 3 \times 22 = 2 \times 33 = 2^1 \times 3^1 \times 11^1$

$67 = 67^1$ 　素数

$68 = 2 \times 2 \times 17 = 4 \times 17 = 2 \times 34 = 2^2 \times 17^1$

$69 = 3^1 \times 23^1$

$70 = 7 \times 10 = 5 \times 14 = 2 \times 35 = 2^1 \times 5^1 \times 7^1$

$71 = 71^1$ 　素数

$72 = 2 \times 2 \times 2 \times 3 \times 3 = 8 \times 9 = 6 \times 12 = 4 \times 18 = 3 \times 24 = 2 \times 36 = 2^3 \times 3^2$

$73 = 73^1$ 　素数

$74 = 2^1 \times 37^1$

$75 = 3 \times 5 \times 5 \times = 5 \times 15 = 3 \times 25 = 3^1 \times 5^2$

$76 = 2 \times 2 \times 19 = 4 \times 19 = 2 \times 38 = 2^2 \times 19^1$

$77 = 7^1 \times 11^1$

$78 = 6 \times 13 = 3 \times 26 = 2 \times 39 = 2^1 \times 3^1 \times 13^1$

$79 = 79^1$ 　素数

$80 = 2 \times 2 \times 2 \times 2 \times 5 = 8 \times 10 = 5 \times 16 = 4 \times 20 = 2 \times 40 = 2^4 \times 5^1$

$81 = 3 \times 3 \times 3 \times 3 = 9 \times 9 = 3 \times 27 = 3^4$

$82 = 2^1 \times 41^1$

$83 = 83^1$ 　素数

$84 = 2 \times 2 \times 3 \times 7 = 7 \times 12 = 4 \times 21 = 3 \times 28 = 2 \times 42 = 2^2 \times 3^1 \times 7^1$

$85 = 5^1 \times 17^1$

$86 = 2^1 \times 43^1$

$87 = 3^1 \times 29^1$

$88 = 2 \times 2 \times 2 \times 11 = 8 \times 11 = 4 \times 22 = 2 \times 44 = 2^3 \times 11^1$

$89 = 89^1$ 　素数

$90 = 2 \times 3 \times 3 \times 5 = 9 \times 10 = 6 \times 15 = 3 \times 30 = 2 \times 45 = 2^1 \times 3^2 \times 5^1$

$91 = 7^1 \times 13^1$

$92 = 2 \times 2 \times 23 = 4 \times 46 = 2^2 \times 23^1$

$93 = 3^1 \times 31^1$

$94 = 2^1 \times 47^1$

$95 = 5^1 \times 19^1$

$96 = 2 \times 2 \times 2 \times 2 \times 2 \times 3 = 8 \times 12 = 6 \times 16 = 4 \times 24 = 3 \times 32 = 2 \times 48 = 2^5 \times 3^1$

$97 = 97^1$ 　素数

$98 = 2 \times 7 \times 7 = 7 \times 14 = 2 \times 49 = 2^1 \times 7^2$

$99 = 3 \times 3 \times 11 = 9 \times 11 = 3 \times 33 = 3^2 \times 11^1$

$100 = 2 \times 2 \times 5 \times 5 = 10 \times 10 = 4 \times 25 = 2^2 \times 5^2$

CANADA'S WINDVIEW

趣味の写真を投稿していきます。昆虫好きな長男と一緒に昆虫を追いかけています。最初の年はセミやカマキリ、次の年はカブトムシ、トンボ、そして今年は…

1から100までの整数 | Integer From 1 To 100

1から100までの整数 | Integer From 1 To 100