Math Flashcards

0
Q

7x3+6x3 =

A

(7+6)x3

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1
Q

(6+8)x2 =

A

6x2+8x2

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2
Q

8x2-6x2 =

A

(8-6)x2

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3
Q

3x5-1x5 =

A

(3-1)x5

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4
Q

4x(3-1) =

A

4x3-4x1

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5
Q

(2+3)x5 =

A

2x5+3x5

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6
Q

7 x 93 =

A

7 x ( 90 + 3 )
= 7 x 90 + 7 x 3
= 630 + 21
= 651

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7
Q

6 x 77 =

A

6 x ( 70 + 7 )
= 6 x70 + 6x7
= 420 + 42
= 462

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8
Q

94 x 5 =

A

(90+4)x5
= 90x5+4x5
=450+20
=470

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9
Q

7x80

A

560

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10
Q

7x800

A

5600

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11
Q

7x8,000

A

56,000

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12
Q

70x80

A

5,600

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13
Q

60x30

A

1,800

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14
Q

300x600

A

180,000

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15
Q

40x20

A

800

16
Q

150x2

A

300

17
Q

150x20

A

3,000

18
Q

150x200

A

30,000

19
Q

99x5 =

A

(100-1)x5
=500-5
=?

20
Q

96x7

A

= (100-4)x7
=100x7 - 4x7
= 700 - 28
= 672

21
Q

16x9=

A

16x(10-1)
=16x10-16x1
=160-16
=144