Практическая работа "Умножение десятичных дробей и степень числа"

Практическая работа по теме «Умножение десятичных дробей. Степень числа»

ФИ_________________________________________________________________________

1) Выполнить умножение на 0,1; 0,01; 0,001 и т.д. по правилу:

354,2 × 0,1 =                                                   4,5 × 0,01 =                                         243 × 0,001 =

248,34 × 0,1 =                                                 0,08 × 0,1 =                                         54 × 0,001 =

3788,2 × 0,001 =                                             6,1 × 0,001 =                                       37 × 0,0001 =

2,8 × 0,1 =                                                       127 × 0,1 =                                          0,01 × 0,0001 =

2) Выполнить умножение в столбик:

6,25 × 4,8 =                                                     0,8 × 0,92 =                                         1,15 × 0,07 =

74 × 4,9 =                                                        6,023 × 5,6 =                                       2,749 × 0,48 =

3) Вычислить, используя понятие степени:

0,3² =                                                             0,3³ =                                                  0,1² =

0,1³ =                                                             0,2³ =                                                  0,2² =

0,4² +0,5² =

0,6² – 0,2 =

2,3² – 3,19 =

1,8³ + 2,68 =

0,3² × 10 =

0,2³ × 100 =

4² × 0,1³ =                                                                               2,5² × 1000 =

0,6² + 0,8² – 0,2³ =

0,1² + 0,1³ =

4) Найдите значение выражения, предварительно расставив порядок действий. Необходимые действия выполнить в столбик:

а) (6 – 4,94) × 2,5 – 2,35 =

б) 0,18 × (8,2 + 3,75) – 1,051 =

в) 28,6 + 11,4 × (6,595 + 3,405) =

г) 20,4 × 6,5 + 3,8 × 18 =

5) Вычислить устно:

0,3 × 3 =                                                                                 0,26 – 0,02 =

0,7 × 5 =                                                                                 0,34 + 0,6 =

0,06 × 4 =                                                                               1 – 0,8 =

8 × 0,04 =                                                                               0,74 + 0,26 =

0,55 × 0 =                                                                               3 – 0,44 =

0,125 × 8 =                                                                             2,7 × 10 =

0,04 × 5 =                                                                               0,1 × 3 =

0,25 × 4 =                                                                               0,691 × 100 =

1,5 × 6 =                                                                                 15 : 1000 =

0,18 × 5 =                                                                               3,8 × 1000 =

0,0034 × 1 =                                                                           1, 717 : 17 =