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30 + 27 =

57. 540. 30 + 27 =. 30 × 18 =. 615. 324. 380+192+43=. 816÷68 × 27=. 用计算器计算下面各题. 44764. 325. 765+469= 589 × 76= 41600 ÷ 128= 1438+2576= 380 × 426= 765+469-296= 3028-2965= 625 ÷ 25= 816 ÷ 68 × 27=.

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30 + 27 =

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  1. 57 540 30 + 27 = 30 × 18 = 615 324 380+192+43= 816÷68 × 27=

  2. 用计算器计算下面各题 44764 325 765+469= 589×76= 41600÷ 128= 1438+2576= 380 ×426= 765+469-296= 3028-2965= 625 ÷ 25= 816÷68×27= 1234 4014 161880 938 324 25 63

  3. 1. 用计算器计算下面各题。 218+493= 2800—1798= 6848—579+386= 2191×35= 3363÷57= 126×7÷18= 711 1002 6655 59 76685 49 ×75 ÷45 ×21 180 3780 8100 108 ÷61 ×84 ÷49 105 8820 180 6405

  4. 2. 先用计算器算出下面各题的积，再找一找有什么规律？ 142857×1= 142857×4= 142857×2= 142857×5= 142857×3= 142857×6= 142857 571428 285714 714285 428571 857142

  5. 3. 先用计算器算出前三题的得数，再直接填出后两题的得数。 1×1=1 11×11= 111×111= 1111×1111= 11111×11111=（ ） （ ）×（ ）=（ ） 121 12321 1234321 123454321 12345654321 111111 111111

  6. 人 机 大 赛 现 在 开 始 =40 15+25 =1008 36×28

  7. 人 机 大 赛 现 在 开 始 =800 25×4×8 =0 968÷2×0

  8. 人 机 大 赛 现 在 开 始 =984 369÷3×8 =1720 259+480+981

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