2025年学习与巩固一年级数学上册人教版第63页答案
$2 + 5 =$ $1 + 5 =$ $2 + 7 =$ $2 + 6 =$ $3 + 3 =$
$5 + 2 =$ $5 + 1 =$ $7 + 2 =$ $6 + 2 =$ $6 - 3 =$
$7 - 2 =$ $6 - 1 =$ $9 - 7 =$ $8 - 6 =$ $5 + 5 =$
$7 - 5 =$ $6 - 5 =$ $9 - 2 =$ $8 - 2 =$ $10 - 5 =$

答案

$2 + 5 = 7$
$1 + 5 = 6$
$2 + 7 = 9$
$2 + 6 = 8$
$3 + 3 = 6$
$5 + 2 = 7$
$5 + 1 = 6$
$7 + 2 = 9$
$6 + 2 = 8$
$6 - 3 = 3$
$7 - 2 = 5$
$6 - 1 = 5$
$9 - 7 = 2$
$8 - 6 = 2$
$5 + 5 = 10$
$7 - 5 = 2$
$6 - 5 = 1$
$9 - 2 = 7$
$8 - 2 = 6$
$10 - 5 = 5$
$3 + 2 =$ $9 - 8 =$ $4 + 3 =$ $3 + 6 =$ $7 - 2 + 3 =$
$7 - 1 =$ $5 - 3 =$ $5 + 4 =$ $1 + 9 =$ $4 + 3 - 6 =$
$6 - 4 =$ $6 - 2 =$ $8 - 8 =$ $1 + 6 =$ $7 - 4 - 3 =$
$4 + 4 =$ $5 - 1 =$ $8 - 4 =$ $9 + 1 =$ $5 + 3 - 4 =$

答案

$3 + 2 = 5$
$9 - 8 = 1$
$4 + 3 = 7$
$3 + 6 = 9$
$7 - 2 + 3 = 8$
$7 - 1 = 6$
$5 - 3 = 2$
$5 + 4 = 9$
$1 + 9 = 10$
$4 + 3 - 6 = 1$
$6 - 4 = 2$
$6 - 2 = 4$
$8 - 8 = 0$
$1 + 6 = 7$
$7 - 4 - 3 = 0$
$4 + 4 = 8$
$5 - 1 = 4$
$8 - 4 = 4$
$9 + 1 = 10$
$5 + 3 - 4 = 4$
1. 比大小。
$4 + 3 ◯ 9 - 3$ $5 - 2 ◯ 1 + 2$ $8 - 0 ◯ 2 + 4$ $4 + 2 ◯ 8 - 2$
$4 - 2 ◯ 3 - 0$ $8 - 4 ◯ 3 + 2$ $0 + 6 ◯ 10 - 5$ $10 - 1 ◯ 3 + 5$

答案

$>$;$=$;$>$;$=$;$<$;$<$;$>$;$>$

解析

$4 + 3 = 7$,$9 - 3 = 6$,$7 > 6$,所以$4 + 3 > 9 - 3$;
$5 - 2 = 3$,$1 + 2 = 3$,$3 = 3$,所以$5 - 2 = 1 + 2$;
$8 - 0 = 8$,$2 + 4 = 6$,$8 > 6$,所以$8 - 0 > 2 + 4$;
$4 + 2 = 6$,$8 - 2 = 6$,$6 = 6$,所以$4 + 2 = 8 - 2$;
$4 - 2 = 2$,$3 - 0 = 3$,$2 < 3$,所以$4 - 2 < 3 - 0$;
$8 - 4 = 4$,$3 + 2 = 5$,$4 < 5$,所以$8 - 4 < 3 + 2$;
$0 + 6 = 6$,$10 - 5 = 5$,$6 > 5$,所以$0 + 6 > 10 - 5$;
$10 - 1 = 9$,$3 + 5 = 8$,$9 > 8$,所以$10 - 1 > 3 + 5$。
2. 填一填。
$5 + □ = 9$ $1 + □ = 5$ $□ - 6 = 3$ $□ - 5 = 4$
$□ + 3 = 10$ $10 - □ = 8$ $□ + 2 = 7$ $4 + □ = 6$

答案

4,4,9,9,7,2,5,2

解析

1. $5 + □ = 9$,根据$9-5=4$,所以填4;
2. $1 + □ = 5$,根据$5-1=4$,所以填4;
3. $□ - 6 = 3$,根据$3+6=9$,所以填9;
4. $□ - 5 = 4$,根据$4+5=9$,所以填9;
5. $□ + 3 = 10$,根据$10-3=7$,所以填7;
6. $10 - □ = 8$,根据$10-8=2$,所以填2;
7. $□ + 2 = 7$,根据$7-2=5$,所以填5;
8. $4 + □ = 6$,根据$6-4=2$,所以填2。