2026年天天练口算一年级数学下册人教版第50页答案
4
在方框里填上正确的数
20 + 59 = □ 93 + 59 = □ 242 + 16 = □ 842 + 18 = □ 067 + 8 = □ 5

67 + 18 = □ 5
44 + 6 = □ 0
44 + 16 = □ 0
73 + 6 = □ 973 + 26 = □ 963 + 9 = □ 238 + 22 = □ 051 + 16 = □ 7

15 + 18 = □ 3
62 + 8 = □ 0
62 + 18 = □ 0$3 + 29 = □ 263 + 29 = □ 244 + 25 =\begin{array}{r} 4\ 4 \\ +\ 2\ 5 \\ \hline ($ $) \end{array}35 + 9 =\begin{array}{r} 3\ 5 \\ + ($ $) \\ \hline ($ $) \end{array}5 + 28 =\begin{array}{r} 5 \\ + ($ $) \\ \hline ($ $) \end{array}26 + 67 =\begin{array}{r} 2\ 6 \\ + ($ $) \\ \hline ($ $) \end{array}67 + 28 =\begin{array}{r} 6\ 7 \\ + ($ $) \\ \hline ($ $) \end{array}6 + 8 =16 + 18 =26 + 28 =46 + 48 =26 + 6 =46 + 16 =56 + 26 =4 + 37 =14 + 37 =24 + 37 =34 + 37 =40 + 25 =43 + 25 =45 + 25 =47 + 25 =49 + 25 =16 + 34 =34 + 16 =22 + 7 =18 + 50 =$

答案

7,6,5,6,7,8,5,6,7,9,7,6,6,3,7,8,3,9,69,9,44,28,33,67,93,28,95,14,34,54,94,32,62,82,41,51,61,71,65,68,70,72,74,50,50,29,68

解析

20+59:个位0+9=9,十位2+5=7,填7;
3+59:个位3+9=12→个位2,十位5+1=6,填6;
42+16:个位2+6=8,十位4+1=5,填5;
42+18:个位2+8=10→个位0,十位4+1+1=6,填6;
67+8:个位7+8=15→个位5,十位6+1=7,填7;
67+18:个位7+8=15→个位5,十位6+1+1=8,填8;
44+6:个位4+6=10→个位0,十位4+1=5,填5;
44+16:个位4+6=10→个位0,十位4+1+1=6,填6;
73+6:个位3+6=9,十位7+0=7,填7;
73+26:个位3+6=9,十位7+2=9,填9;
63+9:个位3+9=12→个位2,十位6+1=7,填7;
38+22:个位8+2=10→个位0,十位3+2+1=6,填6;
51+16:个位1+6=7,十位5+1=6,填6;
15+18:个位5+8=13→个位3,十位1+1+1=3,填3;
62+8:个位2+8=10→个位0,十位6+1=7,填7;
62+18:个位2+8=10→个位0,十位6+1+1=8,填8;
3+29:个位3+9=12→个位2,十位2+1=3,填3;
63+29:个位3+9=12→个位2,十位6+2+1=9,填9;
44+25竖式:44+25=69;
35+9竖式:9对齐个位,35+9=44;
5+28竖式:28对齐个位,5+28=33;
26+67竖式:67对齐数位,26+67=93;
67+28竖式:28对齐数位,67+28=95;
6+8=14;16+18=34;26+28=54;46+48=94;26+6=32;46+16=62;56+26=82;4+37=41;14+37=51;24+37=61;34+37=71;40+25=65;43+25=68;45+25=70;47+25=72;49+25=74;16+34=50;34+16=50;22+7=29;18+50=68。