1. 直接写得数。
$10 + 2 = $ $8 + 10 = $ $18 - 8 = $ $8 + 2 + 6 = $
$19 - 10 = $ $11 + 6 = $ $0 + 16 = $ $13 - 2 + 5 = $
$15 - 3 = $ $5 + 14 = $ $10 + 10 = $ $16 - 6 - 6 = $
$16 - 10 = $ $12 + 5 = $ $14 - 3 = $ $15 - 2 + 4 = $
$10 + 2 = $ $8 + 10 = $ $18 - 8 = $ $8 + 2 + 6 = $
$19 - 10 = $ $11 + 6 = $ $0 + 16 = $ $13 - 2 + 5 = $
$15 - 3 = $ $5 + 14 = $ $10 + 10 = $ $16 - 6 - 6 = $
$16 - 10 = $ $12 + 5 = $ $14 - 3 = $ $15 - 2 + 4 = $
答案
12 18 10 16 9 17 16 16 12 19 20 4 6 17 11 17
2. 在$◯$里填上“$>$”“$<$”或“$=$”。
$15 - 10 ◯ 6$ $10 + 9 ◯ 19$ $14 ◯ 13 + 2$
$12 + 6 ◯ 17$ $16 - 6 ◯ 6$ $15 ◯ 17 - 4$
$3 + 10 ◯ 12$ $13 + 5 ◯ 18$ $9 ◯ 13 - 3$
$15 - 10 ◯ 6$ $10 + 9 ◯ 19$ $14 ◯ 13 + 2$
$12 + 6 ◯ 17$ $16 - 6 ◯ 6$ $15 ◯ 17 - 4$
$3 + 10 ◯ 12$ $13 + 5 ◯ 18$ $9 ◯ 13 - 3$
答案
< = < > > > > = <
解析
15 - 10 < 6
10 + 9 = 19
14 < 13 + 2
12 + 6 > 17
16 - 6 > 6
15 > 17 - 4
3 + 10 > 12
13 + 5 = 18
9 < 13 - 3
10 + 9 = 19
14 < 13 + 2
12 + 6 > 17
16 - 6 > 6
15 > 17 - 4
3 + 10 > 12
13 + 5 = 18
9 < 13 - 3
3. 算一算,填一填。
$4 + □ = 14$ $□ + 3 = 15$ $□ + □ = 13$
$18 - □ = 8$ $3 + □ = 16$ $17 - □ = □$
$6 + □ = 19$ $19 - □ = 13$ $□ + □ = 18$
$4 + □ = 14$ $□ + 3 = 15$ $□ + □ = 13$
$18 - □ = 8$ $3 + □ = 16$ $17 - □ = □$
$6 + □ = 19$ $19 - □ = 13$ $□ + □ = 18$
答案
(竖排)10 10 13 12 13 6 11 2 7 10 11 7(最后一组三个算式答案不唯一)
解析
10;12;6;10;13;7;13;11;10;7(最后一组答案不唯一)
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