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Day 1

口算：

$(-8) + 12 =$
$-15 - (-7) =$
$6 \times (-0.5) =$
$(-24) \div 4 =$
$3x - 5x + 2x =$

笔算：

$\left( \frac{2}{3} - \frac{1}{4} \right) \times 6 + \frac{1}{2}$
$\frac{5}{6} \div \left( 1 - \frac{1}{3} \right) - \frac{1}{4}$
$3 - \left[ \frac{1}{2} \times \left( 4 - \frac{5}{2} \right) \right]$
$2x + 7 = 15$
$5(x - 3) = 20$

Day 2

口算：

$9 + (-14) =$
$-6 \times (-4) =$
$18 \div (-3) =$
$-11 - 5 =$
$-4a + 7a - a =$

笔算：

$\left( \frac{3}{5} + \frac{1}{10} \right) \div \frac{7}{10} \times 2$
$\frac{2}{3} \times \left( 4 - \frac{5}{2} \right) + \frac{1}{6}$
$\left( 1 - \frac{1}{4} \right)^2 \div \frac{3}{8}$
$3x - 4 = 2x + 9$
$\frac{x}{3} + 2 = 5$

Day 3

口算：

$(-7) \times 3 =$
$0 - (-9) =$
$-36 \div (-6) =$
$-13 + 20 =$
$5y - 3y + y =$

笔算：

$\left( \frac{4}{5} - \frac{1}{2} \right) \times \frac{10}{3} + 1$
$2 \div \frac{1}{4} - \frac{3}{4} \times \frac{8}{3}$
$\left[ \frac{3}{8} + \left( 1 - \frac{5}{8} \right) \right] \times 4$
$4x + 5 = 3(x - 1)$
$\frac{2x - 1}{3} = 5$

Day 4

口算：

$14 \div (-2) =$
$-9 + (-6) =$
$(-5) \times (-8) =$
$7 - 12 =$
$-2b + 5b - 3b =$

笔算：

$\frac{7}{9} \times \left( 3 - \frac{11}{3} \right) + \frac{2}{3}$
$\left( \frac{5}{6} - \frac{1}{3} \right) \div \frac{1}{4} - \frac{1}{2}$
$1.5 \times \left( \frac{2}{3} + \frac{1}{6} \right) - 0.25$
$6 - 2x = x + 9$
$\frac{x + 4}{2} = 3x - 1$

Day 5

口算：

$(-30) \div 5 =$
$-4 - 10 =$
$12 \times (-0.25) =$
$-8 + 15 =$
$3x - (-2x) =$

笔算：

$\left( 2 - \frac{3}{4} \right) \times \frac{8}{5} + \frac{1}{10}$
$\frac{3}{4} \div \frac{1}{2} - \frac{1}{3} \times \frac{9}{2}$
$\left( \frac{1}{2} + \frac{1}{3} \right) \times \left( \frac{6}{5} - \frac{1}{2} \right)$
$3(2x + 1) = 4x - 5$
$\frac{3x}{4} - 2 = 1$

Day 6

口算：

$(-12) \times 0.5 + 4 =$
$-18 \div (-0.6) =$
$7 - (-3) \times 2 =$
$(-3)^2 - 10 =$
$4a - (a - 3a) =$

笔算：

$\left( \frac{5}{6} - \frac{1}{4} \right) \div \frac{7}{12} + \frac{3}{7}$
$2 - \left[ \frac{1}{3} \div \left( \frac{2}{5} + \frac{1}{10} \right) \right]$
$\left( \frac{3}{4} + \frac{1}{2} \right) \times \frac{4}{5} - \frac{3}{10}$
$7x - 3 = 2(3x + 1)$
$\frac{x}{2} - 4 = \frac{x}{3} + 1$

Day 7

口算：

$25 \div (-5) + 3 =$
$-4.5 \times 2 =$
$(-7) - (-12) =$
$3^2 + (-2)^3 =$
$-5y + 2y - (-y) =$

笔算：

$\frac{3}{4} \times \left( 2 - \frac{5}{3} \right) + \frac{7}{8} \div \frac{1}{4}$
$\left[ \frac{2}{5} + \left( 1 - \frac{3}{4} \right) \right] \times \frac{10}{3}$
$4 - \frac{1}{2} \div \left( \frac{3}{4} - \frac{1}{2} \right)$
$\frac{3x-1}{2} = 2x + 4$
$5 - 2(y - 3) = 3y + 1$

Day 8

口算：

$(-16) \div 4 \times (-2) =$
$0.75 \times (-8) =$
$-9 + 15 - (-4) =$
$(-1)^3 \times 5 + 10 =$
$2x - (5x - 3x) =$

笔算：

$\left( 1 + \frac{1}{2} \right)^2 - \frac{3}{4} \div \frac{1}{2}$
$\frac{5}{6} \times \left( \frac{3}{5} - \frac{1}{10} \right) + \frac{1}{3}$
$\left[ 4 - \left( \frac{1}{2} + \frac{2}{3} \right) \right] \times \frac{3}{5}$
$3(x + 2) - 2x = x + 10$
$\frac{2x + 1}{3} = \frac{x - 2}{2}$

Day 9

口算：

$(-20) \div (-0.5) =$
$6.5 - 8.5 =$
$(-3) \times 4 + (-5) =$
$2^4 \div (-4) =$
$-3a - (-2a) + 4a =$

笔算：

$\left( \frac{7}{8} - \frac{3}{4} \right) \div \frac{1}{8} + \frac{5}{6}$
$1.2 \times \left( \frac{1}{3} + \frac{1}{6} \right) - \frac{1}{4}$
$\left( \frac{2}{3} \right)^2 \times 9 - \frac{1}{2}$
$5x - 4 = 2(3x + 1)$
$\frac{x}{4} + \frac{x}{3} = 7$

Day 10

口算：

$32 \div (-8) + 5 =$
$-2.5 \times (-4) =$
$18 - (-6) \div 2 =$
$(-3)^2 - (-2)^2 =$
$7y - 4y + (-y) =$

笔算：

$\left( \frac{5}{6} - \frac{2}{3} \right) \times 12 + \frac{3}{4}$
$\frac{3}{5} \div \left( 1 - \frac{1}{4} \right) \times \frac{5}{6}$
$\left[ 2 \times \left( \frac{1}{2} - \frac{1}{3} \right) \right] \div \frac{1}{6}$
$4 - 3x = 2(x + 5)$
$\frac{3x - 2}{5} = \frac{x + 1}{2}$

Day 1 答案

口算：

$4$
$-8$
$-3$
$-6$
$0$

笔算：

$3$
$1$
$\frac{9}{4}$
$x = 4$
$x = 7$

Day 2 答案

口算：

$-5$
$24$
$-6$
$-16$
$2a$

笔算：

$2$
$\frac{7}{6}$
$\frac{3}{2}$
$x = 13$
$x = 9$

Day 3 答案

口算：

$-21$
$9$
$6$
$7$
$3y$

笔算：

$2$
$6$
$3$
$x = -8$
$x = 8$

Day 4 答案

口算：

$-7$
$-15$
$40$
$-5$
$0$

笔算：

$\frac{4}{27}$
$\frac{3}{2}$
$1$
$x = -1$
$x = \frac{6}{5}$

Day 5 答案

口算：

$-6$
$-14$
$-3$
$7$
$5x$

笔算：

$\frac{21}{10}$
$0$
$\frac{7}{12}$
$x = -4$
$x = 4$

Day 6 答案

口算：

$-2$
$30$
$13$
$-1$
$6a$

笔算：

$\frac{13}{7}$
$\frac{5}{3}$
$\frac{1}{2}$
$x = -5$
$x = 30$

Day 7 答案

口算：

$-2$
$-9$
$5$
$1$
$-2y$

笔算：

$-\frac{1}{2}$
$\frac{1}{3}$
$3$
$x = -9$
$y = \frac{12}{5}$

Day 8 答案

口算：

$8$
$-6$
$10$
$5$
$0$

笔算：

$\frac{9}{4}$
$\frac{1}{3}$
$\frac{29}{10}$
$x = 4$
$x = 8$

Day 9 答案

口算：

$40$
$-2$
$-17$
$-4$
$3a$

笔算：

$\frac{5}{6}$
$0.15$
$\frac{7}{2}$
$x = -6$
$x = 12$

Day 10 答案

口算：

$1$
$10$
$21$
$5$
$2y$

笔算：

$\frac{3}{4}$
$\frac{1}{2}$
$2$
$x = -\frac{6}{5}$
$x = 9$

Day 11

口算：

$(-15) \div 0.5 =$
$7 - (-3) \times 2 =$
$-4a - 2a + 9a =$
$(-3)^3 \times 2 =$
$12x - (5x - 3x) =$

笔算：

$\frac{3}{4} \times \left( 2 - \frac{5}{3} \right) + \frac{7}{8} \div \frac{1}{4}$
$\left[ \frac{2}{5} + \left( 1 - \frac{3}{4} \right) \right] \times \frac{10}{3}$
$4 - \frac{1}{2} \div \left( \frac{3}{4} - \frac{1}{2} \right)$
$\frac{3x-1}{2} = 2x + 4$
$5 - 2(y - 3) = 3y + 1$

Day 12

口算：

$24 \div (-0.8) =$
$-5 \times 6 + 10 =$
$3b - 5b + (-b) =$
$(-4)^2 \div (-2) =$
$8y - (3y + 2y) =$

笔算：

$\left( \frac{5}{6} - \frac{1}{3} \right) \times \frac{9}{2} + \frac{1}{4}$
$1.25 \div \frac{5}{8} - \frac{3}{4} \times \frac{4}{3}$
$\left[ 2 - \left( \frac{1}{4} + \frac{1}{2} \right) \right] \div \frac{1}{8}$
$3(x + 2) - 1 = 2x + 7$
$\frac{2y + 3}{4} = y - 1$

Day 13

口算：

$(-18) \times (-0.5) =$
$12 + (-15) \div 3 =$
$-7x + 4x - x =$
$(-2)^4 \div 4 =$
$5a - ( -2a ) + a =$

笔算：

$\frac{2}{3} \div \left( 1 - \frac{2}{5} \right) - \frac{1}{2}$
$\left( \frac{3}{8} + \frac{5}{12} \right) \times \frac{24}{5}$
$3.5 \times \frac{2}{7} + \left( 1 - \frac{3}{4} \right)$
$4 - 5x = 3(2 - x)$
$\frac{x}{5} + 3 = \frac{2x - 1}{2}$

Day 14

口算：

$30 \div (-1.5) =$
$-9 \times (-2) + (-6) =$
$6c - 4c - 5c =$
$| -8 | + (-5)^2 =$
$-3d - (2d - d) =$

笔算：

$\left( 1 + \frac{1}{2} \right) \times \frac{2}{3} - \frac{5}{6}$
$\frac{7}{10} \div 0.7 - \frac{1}{4} \times 2$
$\left[ \frac{3}{5} - \left( \frac{1}{2} - \frac{1}{5} \right) \right] \times 10$
$2(3x - 4) = 5x + 2$
$\frac{3}{4}x - 2 = \frac{x}{3} + 1$

Day 15

口算：

$(-25) \div 5 \times (-2) =$
$6 - 4 \times (-3) =$
$8m - 5m + m =$
$(-1)^{10} - (-1)^9 =$
$4n - (n - 3n) =$

笔算：

$\left( \frac{5}{6} - \frac{2}{3} \right)^2 \times 18 + \frac{1}{2}$
$2.4 \times \frac{5}{6} - \frac{1}{3} \div 0.5$
$\left( \frac{2}{3} + \frac{1}{4} \right) \div \left( \frac{5}{6} - \frac{1}{3} \right)$
$\frac{2(x-3)}{5} = \frac{x+1}{2}$
$3y - 2( y - 4 ) = 5y + 1$

Day 16

口算：

$16 \times (-0.25) + 5 =$
$-14 \div 2 - (-3) =$
$-9p + 2p - p =$
$(-3)^3 + 4^2 =$
$7q - (4q + q) =$

笔算：

$\frac{1}{2} \times \left( 3 - \frac{5}{2} \right) + \frac{3}{4} \div \frac{1}{2}$
$\left[ \frac{4}{9} \div \frac{2}{3} + \frac{1}{3} \right] \times \frac{3}{5}$
$0.8 + \frac{1}{5} \times \left( \frac{3}{4} - \frac{1}{2} \right)$
$5x - 3 = 2( x + 4 )$
$\frac{2x - 5}{3} = \frac{x + 1}{4}$

Day 17

口算：

$(-36) \div (-9) \times (-2) =$
$5 \times (-8) \div 4 =$
$6r - 8r + 3r =$
$2^5 \div (-8) =$
$-3s - ( -5s ) + s =$

笔算：

$\left( \frac{3}{4} - \frac{1}{2} \right) \div \frac{1}{8} - \frac{2}{3}$
$\frac{5}{12} \times 6 - \left( 1 - \frac{1}{3} \right)^2$
$1 - \frac{1}{3} \times \left( 0.6 + \frac{2}{5} \right)$
$3(2 - x) + 4x = 5x - 2$
$\frac{3y}{2} - 5 = \frac{y}{4} + 1$

Day 18

口算：

$21 \div (-7) + 4 =$
$-3.5 \times 2 + 10 =$
$-t + 5t - 2t =$
$(-4)^2 - 3^3 =$
$4u - 2u - (-u) =$

笔算：

$\left( 1 - \frac{3}{5} \right) \times \frac{10}{3} + \frac{7}{15}$
$\frac{8}{9} \div \frac{4}{3} - \frac{1}{6} \times 3$
$\left[ \frac{5}{6} - \frac{1}{2} \right] \div \frac{1}{3} + \frac{1}{4}$
$4(x - 1) = 3(x + 2) - 5$
$\frac{x - 1}{2} + \frac{x + 2}{3} = 4$

Day 19

口算：

$(-48) \div 12 \times 0.5 =$
$9 - (-6) \div 3 =$
$5v - 7v + 4v =$
$| -12 | + (-3) \times 4 =$
$-6w - ( -2w ) - w =$

笔算：

$\frac{2}{5} + \frac{3}{4} \times \left( \frac{1}{2} - \frac{1}{5} \right)$
$1.6 \div \frac{4}{5} - \frac{2}{3} \times \frac{9}{4}$
$\left( \frac{1}{3} \right)^2 \times 18 + \frac{1}{2} \div \frac{1}{4}$
$2x + 5 - 3x = 4( x - 1 )$
$\frac{3}{5}z - \frac{1}{2} = \frac{2z - 1}{10}$

Day 20

口算：

$0.6 \times (-10) + 18 =$
$-24 \div (-3) - 7 =$
$-2x + 3x - 5x =$
$(-5)^2 - (-2)^3 =$
$7y - [3y - (y - 2y)] =$

笔算：

$2 \times \left[ 3 - \left( \frac{1}{2} + \frac{2}{3} \right) \times \frac{6}{5} \right]$
$\frac{3}{4} \div 0.5 - \left( \frac{1}{2} + \frac{1}{4} \right) \times 2$
$\left( \frac{7}{10} - \frac{1}{5} \right) \times \frac{5}{3} + \frac{2}{9}$
$5 - 3(2 - x) = 4x - 1$
$\frac{4x - 3}{2} - \frac{2x + 1}{3} = 0$

Day 11 答案

口算：

$-30$
$13$
$3a$
$-54$
$10x$

笔算：

$-\frac{1}{2}$
$\frac{1}{3}$
$3$
$x = -9$
$y = \frac{12}{5}$

Day 12 答案

口算：

$-30$
$-20$
$-3b$
$-8$
$3y$

笔算：

$\frac{13}{4}$
$0$
$10$
$x = 2$
$y = 7$

Day 13 答案

口算：

$9$
$7$
$-4x$
$4$
$8a$

笔算：

$\frac{7}{6}$
$\frac{19}{5}$
$\frac{5}{4}$
$x = -1$
$x = \frac{35}{8}$

Day 14 答案

口算：

$-20$
$12$
$-3c$
$33$
$-4d$

笔算：

$\frac{1}{6}$
$0$
$3$
$x = 10$
$x = \frac{36}{5}$

Day 15 答案

口算：

$10$
$18$
$4m$
$2$
$6n$

笔算：

$\frac{1}{2}$
$1$
$\frac{7}{2}$
$x = 17$
$y = \frac{7}{4}$

Day 16 答案

口算：

$1$
$-4$
$-8p$
$-11$
$2q$

笔算：

$\frac{1}{4}$
$\frac{3}{5}$
$\frac{4}{5}$
$x = 10$
$x = \frac{23}{5}$

Day 17 答案

口算：

$-8$
$-10$
$r$
$-4$
$3s$

笔算：

$\frac{4}{3}$
$1$
$\frac{1}{3}$
$x = 2$
$y = \frac{24}{5}$

Day 18 答案

口算：

$1$
$3$
$2t$
$-11$
$3u$

笔算：

$2$
$0$
$2$
$x = 5$
$x = 4$

Day 19 答案

口算：

$-2$
$11$
$2v$
$0$
$-5w$

笔算：

$\frac{19}{25}$
$0$
$6$
$x = \frac{9}{5}$
$z = \frac{5}{4}$

Day 20 答案

口算：

$12$
$1$
$-4x$
$33$
$7y$

笔算：

$1$
$1$
$1$
$x = \frac{12}{7}$
$x = \frac{11}{8}$