正負の掛け算割り算・発展 No.1
1.
次の計算をしなさい。(1) 49×6 = (2) 5×(−5) =
(3) (−54)×(−7) = (4) 12×(−4) =
(5) 28×(−0
.6) = (6) 93.1×4 =
(7) (−4
.2)×(−84) = (8) 98×(−90) =
(9) (−3
2.
次の計算をしなさい。(1) 3×
³
−1
6
´
= (2) ³−5
6
´
×
³
− 3
5
´
=
(3) ³−1
6
´
× 4
7 = (4)
³
−6
5
´
×
³
− 1
2
´
=
(5) ³−3
5
´
× 1
6 = (6)
7 18 ×
12 7 =
(7) ³− 7
10
´
×
³
− 15
11
´
= (8) ³−18
7
´
×
³
−11
6
´
=
(9) 6
5 ×
³
− 7
12
´
= (10) 20
3.
次の計算を割り切れるまでしなさい。(1) 48÷4 = (2) 414÷0.9 =
(3) (−175)÷0
.7 = (4) 156÷6 =
(5) (−441)÷(−9) = (6) (−4.65)÷(−1.5) =
(7) 410.4÷(−76) = (8) 36.08÷8.8 =
4.
次の計算をしなさい。(1) ³−4
3
´
÷
³
− 1
6
´
= (2) 1
6 ÷
³
−3
4
´
=
(3) ³−5
2
´
÷ 7
4 = (4)
³
−3
2
´
÷ 1
6 =
(5) ³−1
2
´
÷ 1
6 = (6)
11 8 ÷
³
−11
12
´
=
(7) 11
8 ÷ 1
10 = (8)
³
−7
6
´
÷
³
− 17
18
´
=
(9) 1
12 ÷ 17
20 = (10)
³
− 7
15
´
÷ 1
5.
次の計算をしなさい。(1) (−16)÷(−4)×8 = (2) (−7)×5×(−6) =
(3) (−42)÷7×6 = (4) (−6)×(−4)÷3 =
(5) (−504)÷9÷7 = (6) 8×(−8)×2 =
(7) 12÷(−3)×2 = (8) (−27)÷(−3)×(−4) =
6.
次の計算をしなさい。(1) ³−1
4 ´ ÷ ³ − 11 6 ´ ÷ ³ −1 2 ´
= (2) ³−2
3 ´ × ³ − 6 7 ´ × ³ −11 6 ´ =
(3) ³−8
3 ´ × ³ − 5 6 ´ ÷ ³ −2 9 ´
= (4) 7
6 ÷ ³ −8 3 ´ ÷ ³ −5 4 ´ =
(5) ³−6
5
´
× 7
9 × 3
2 = (6)
³ −1 6 ´ ÷ ³ − 4 9 ´ ÷ ³ −1 2 ´ =
(7) ³−5
2 ´ ÷ ³ − 11 6 ´ × ³ −8 9 ´
= (8) 4
3 × ³ −6 7 ´ × 1 4 = (9) 7 6 ÷ ³ −5 6 ´ × ³ −7 6 ´
= (10) ³−4
正負の掛け算割り算・発展 No.1
1.
次の計算をしなさい。(1) 49×6 =
294
(2) 5×(−5) =−
25
(3) (−54)×(−7) =
378
(4) 12×(−4) =−
48
(5) 28×(−0
.6) =
−
16
.
8
(6) 93.1×4 =372
.
4
(7) (−4
.2)×(−84) =
352
.
8
(8) 98×(−90) =−
8820
(9) (−3
2.
次の計算をしなさい。(1) 3×
³
−1
6
´
=
−
1
2
(2) ³ −5 6 ´ × ³ − 3 5 ´ =1
2
(3) ³−1
6
´
× 4
7 =
−
2
21
(4) ³ −6 5 ´ × ³ − 1 2 ´ =3
5
(5) ³−3
5
´
× 1
6 =
−
1
10
(6) 7 18 × 12 7 =2
3
(7) ³− 7
10 ´ × ³ − 15 11 ´ =
21
22
(8) ³ −18 7 ´ × ³ −11 6 ´ =33
7
(9) 6 5 × ³ − 7 12 ´ =−
7
10
(10) 2021 ×(−14) =
−
40
3.
次の計算を割り切れるまでしなさい。(1) 48÷4 =
12
(2) 414÷0.9 =
460
(3) (−175)÷0
.7 =
−
250
(4) 156÷6 =26
(5) (−441)÷(−9) =
49
(6) (−4.65)÷(−1.5) =3
.
1
(7) 410.4÷(−76) =
−
5
.
4
(8) 36.08÷8.8 =4
.
1
(9) (−195)÷(−5) =
39
(10) (−6013)÷7 =4.
次の計算をしなさい。(1) ³−4
3
´
÷
³
− 1
6
´
=
8
(2) 16 ÷
³
−3
4
´
=
−
2
9
(3) ³−5
2
´
÷ 7
4 =
−
10
7
(4) ³−3
2
´
÷ 1
6 =
−
9
(5) ³−1
2
´
÷ 1
6 =
−
3
(6) 11 8 ÷³
−11
12
´
=
−
3
2
(7) 11
8 ÷ 1 10 =
55
4
(8)³
−7
6
´
÷
³
− 17
18
´
=
21
17
(9) 1
12 ÷ 17 20 =
5
51
(10)³
− 7
15
´
÷ 1
18 =
−
42
5.
次の計算をしなさい。(1) (−16)÷(−4)×8 =
32
(2) (−7)×5×(−6) =210
(3) (−42)÷7×6 =
−
36
(4) (−6)×(−4)÷3 =8
(5) (−504)÷9÷7 =
−
8
(6) 8×(−8)×2 =−
128
(7) 12÷(−3)×2 =
−
8
(8) (−27)÷(−3)×(−4) =−
36
(9) 30÷(−2)÷5 =
6.
次の計算をしなさい。(1) ³−1
4 ´ ÷ ³ − 11 6 ´ ÷ ³ −1 2 ´
=
−
3
11
(2) ³ −2 3 ´ × ³ − 6 7 ´ × ³ −11 6 ´=
−
22
21
(3) ³−8
3 ´ × ³ − 5 6 ´ ÷ ³ −2 9 ´
=
−
10
(4) 7 6 ÷ ³ −8 3 ´ ÷ ³ −5 4 ´ =7
20
(5) ³−6
5
´
× 7
9 × 3
2 =
−
7
5
(6) ³ −1 6 ´ ÷ ³ − 4 9 ´ ÷ ³ −1 2 ´=
−
3
4
(7) ³−5
2 ´ ÷ ³ − 11 6 ´ × ³ −8 9 ´ =
