一、我会计算。
$15 - 5 = $ $15 - 7 = $ $32 + 50 = $ $20 + 30 + 8 = $
$21 + 7 = $ $32 + 5 = $ $50 + 20 = $ $14 + 2 + 3 = $
$46 + 30 = $ $3 + 83 = $ $43 + 6 = $ $32 + 4 + 3 = $
$65 + 3 = $ $30 + 40 = $ $56 + 2 = $ $17 - 9 + 6 = $
$15 - 5 = $ $15 - 7 = $ $32 + 50 = $ $20 + 30 + 8 = $
$21 + 7 = $ $32 + 5 = $ $50 + 20 = $ $14 + 2 + 3 = $
$46 + 30 = $ $3 + 83 = $ $43 + 6 = $ $32 + 4 + 3 = $
$65 + 3 = $ $30 + 40 = $ $56 + 2 = $ $17 - 9 + 6 = $
答案:
10 8 82 58 28 37 70 19 76 86 49 39 68 70 58 14
二、看图填一填。
1.

$38 + 2 = □$
先算$□ + □ = □$
再算$□ + □ = □$
1.
$38 + 2 = □$
先算$□ + □ = □$
再算$□ + □ = □$
答案:
1. 40 $8 + 2 = 10$ $30 + 10 = 40$
2.
$26 + 7 = □$
先算$□ + □ = □$
再算$□ + □ = □$
$26 + 7 = □$
先算$□ + □ = □$
再算$□ + □ = □$
答案:
2. 33 $6 + 7 = 13$ $20 + 13 = 33$
三、在$◯$里填上“$>$”“$<$”或“$=$”。
$47 + 3 ◯ 50$ $28 + 4 ◯ 36$ $39 + 5 ◯ 42 + 3$
$6 + 28 ◯ 33$ $36 + 8 ◯ 42$ $25 + 9 ◯ 26 + 6$
$47 + 3 ◯ 50$ $28 + 4 ◯ 36$ $39 + 5 ◯ 42 + 3$
$6 + 28 ◯ 33$ $36 + 8 ◯ 42$ $25 + 9 ◯ 26 + 6$
答案:
= < < > > >
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