1. $75 - 13 =$ $45 + 23 =$ $48 + 12 =$
$75 - 15 =$ $45 + 25 =$ $60 - 12 =$
$75 - 17 =$ $45 + 28 =$ $60 - 48 =$
$75 - 15 =$ $45 + 25 =$ $60 - 12 =$
$75 - 17 =$ $45 + 28 =$ $60 - 48 =$
答案:
1. 62,60,58 68,70,73 60,48,12
2. $60 - 38 =$ $45 + 36 =$ $37 + 59 =$
$69 + 25 =$ $98 - 46 =$ $26 + 73 =$
$93 - 68 =$ $27 + 59 =$ $83 - 46 =$
$85 - 63 =$ $43 + 27 =$ $95 - 62 =$
$65 + 28 =$ $50 - 21 =$ $54 - 36 =$
$69 + 25 =$ $98 - 46 =$ $26 + 73 =$
$93 - 68 =$ $27 + 59 =$ $83 - 46 =$
$85 - 63 =$ $43 + 27 =$ $95 - 62 =$
$65 + 28 =$ $50 - 21 =$ $54 - 36 =$
答案:
2. 22 81 96 94 52 99 25 86 37 22 70 33 93 29 18
3. 在$◯$里填“$>$”“$<$”或“$=$”。
$73 - 28◯53 - 28$ $31 + 52◯32 + 51$ $59 + 24◯69 + 24$
$82 - 36◯82 - 56$ $13 + 25◯75 - 36$ $66 - 24◯35 + 17$
$73 - 28◯53 - 28$ $31 + 52◯32 + 51$ $59 + 24◯69 + 24$
$82 - 36◯82 - 56$ $13 + 25◯75 - 36$ $66 - 24◯35 + 17$
答案:
3. > = < > < =
4. $12 + 12 + 12 =$ $50 - 26 + 13 =$
$17 + 17 + 17 =$ $45 + 25 - 49 =$
$17 + 17 + 17 =$ $45 + 25 - 49 =$
答案:
4. 36 37 51 21
5. $45 + 26 = 31 + (\quad)$ $75 - 24 = 15 + (\quad)$
$89 - 36 = 62 - (\quad)$ $35 + 18 = 75 - (\quad)$
$89 - 36 = 62 - (\quad)$ $35 + 18 = 75 - (\quad)$
答案:
5. 40 36 9 22
6. 一辆公交车上原来有$52$人,到城西广场站时有$15$人下车,$17$人上车。离站时,车上比到站前多了多少人?
答案:
6. 17-15=2(人)
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