如题所述
第1个回答 2022-07-18
脱式计算,即递等式计算,把计算过程完整写出来的运算,也就是脱离竖式的计算.在计算混合运算时,通常是一步计算一个算式(逐步计算,等号不能写在原式上),要写出每一步的过程.一般来说,等号要往前,不与第一行对齐.也就是离开原式计算.举例250÷50+12×4=5+48=53如何脱式计算?
如何脱式计算?主要掌握的是记住要先算乘、除法,后算加、减法.在乘除法连继计算时中,要按从左往右的顺序依次计算.遇到括号,要首先计算括号内部.在脱式过程中要按运算顺序划出运算顺序线,还要做到“三核对”,一要核对从书上把题抄到作业本上数字、符号是否抄对.二要核对从横式抄到草稿竖式的数字、符号是否抄对.三要核对把草稿竖式上的得数,抄到横式上是否抄对,小数点是否点对地方,有无遗漏.
① 4054-507+614 ② 25÷5+168 ③(416-360)÷7 ④ 580-8×9
九、脱式计算 82-22+84 22-(28-22) 88-(25-24) 88-86+22 68-28+26
= = = = = = = = = =
(100-63)×8 38-(49-21) 42÷(1+6) 6×(5+4) 88+88-86 = = = = =
= = = = =
——————————————————————————————————————————————————
十、脱式计算
77-46+32 63-38+26 79+19-36 76+72÷8 88-26+28 = = = = = = = = = =
20-(22+28) 22+22+84 82-(28-22) 88+(88-28) 88-28+86 = = = = = = = = = =
十一、脱式计算 6+8×4 (6+2)×7 (40-28)÷6 (42+30)×2 77-76+32
= = = = = = = = = =
5×3+9 9×8+30 8×7+30 6×8+6 61-38+26 = = = = = = = = = =
——————————————————————————————————————————————————
十二、脱式计算
(66-50)÷2 36÷(2+4) 38-36+27 84-27+16 79+19-16 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27 = = = = = = = = = =
十三、脱式计算
73-23-4 87-27+16 93-(39-23) 71-(23-24) 99-(23-24) = = = = = = = = = =
30+(23-29) 73-23-4 93-(39-23) 71-(23-24) 99-96+32 = = = = = = = = = =
——————————————————————————————————————————————————
十四、脱式计算
(66-50)÷2 36÷(2+4) 38-36+27 84-27+16 79+19-16 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27 = = = = = = = = = =
十五、脱式计算 80-(19+42) ( 21+15)÷9 64+8×2 81÷9×6 (39-30)×6
= = = = = = = = = =
(79-23)÷8 (4+5)×6 81÷9×6 54+9×2 8×7-55
= = = = =
= = = = =
——————————————————————————————————————————————————
十六、脱式计算
90-2×9 56-1×6 (85-31)+59 64÷(24-16) 48-24÷3 = = = = = = = = = =
12÷4+75 7×5+18 6×6+27 23+6×8 (33+49)-68 = = = = =
= = = = =
十七、脱式计算 180-(19+142) ( 30+15)÷9 64+8×6 81÷9×7 (34-30)×6
= = = = = = = = = =
(79-7)÷8 (4+5)×6 81÷9×7 67+7×2 8×8-55
= = = = =
= = = = =
——————————————————————————————————————————————————
十八、脱式计算
90-5×9 56-4×6 46+4×4 31-3×2 4×7+46 = = = = = = = = = =
53-1×9 68+2×8 2×9+63 6×8-29 6×3+66 7 = = = = =
= = = = =
十九、脱式计算 80-(19+42) ( 21+15)÷9 64+8×2 81÷9×6 (39-30)×6
= = = = = = = = = =
(79-23)÷8 (4+5)×6 81÷9×6 54+9×2 8×7-55
= = = = =
= = = = =
二十、脱式计算
90-9×9 56-6×6 (85-31)÷9 64÷(24-16) 48-24÷3 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27
希望对你有用O(∩_∩)O谢谢
如何脱式计算?主要掌握的是记住要先算乘、除法,后算加、减法.在乘除法连继计算时中,要按从左往右的顺序依次计算.遇到括号,要首先计算括号内部.在脱式过程中要按运算顺序划出运算顺序线,还要做到“三核对”,一要核对从书上把题抄到作业本上数字、符号是否抄对.二要核对从横式抄到草稿竖式的数字、符号是否抄对.三要核对把草稿竖式上的得数,抄到横式上是否抄对,小数点是否点对地方,有无遗漏.
① 4054-507+614 ② 25÷5+168 ③(416-360)÷7 ④ 580-8×9
九、脱式计算 82-22+84 22-(28-22) 88-(25-24) 88-86+22 68-28+26
= = = = = = = = = =
(100-63)×8 38-(49-21) 42÷(1+6) 6×(5+4) 88+88-86 = = = = =
= = = = =
——————————————————————————————————————————————————
十、脱式计算
77-46+32 63-38+26 79+19-36 76+72÷8 88-26+28 = = = = = = = = = =
20-(22+28) 22+22+84 82-(28-22) 88+(88-28) 88-28+86 = = = = = = = = = =
十一、脱式计算 6+8×4 (6+2)×7 (40-28)÷6 (42+30)×2 77-76+32
= = = = = = = = = =
5×3+9 9×8+30 8×7+30 6×8+6 61-38+26 = = = = = = = = = =
——————————————————————————————————————————————————
十二、脱式计算
(66-50)÷2 36÷(2+4) 38-36+27 84-27+16 79+19-16 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27 = = = = = = = = = =
十三、脱式计算
73-23-4 87-27+16 93-(39-23) 71-(23-24) 99-(23-24) = = = = = = = = = =
30+(23-29) 73-23-4 93-(39-23) 71-(23-24) 99-96+32 = = = = = = = = = =
——————————————————————————————————————————————————
十四、脱式计算
(66-50)÷2 36÷(2+4) 38-36+27 84-27+16 79+19-16 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27 = = = = = = = = = =
十五、脱式计算 80-(19+42) ( 21+15)÷9 64+8×2 81÷9×6 (39-30)×6
= = = = = = = = = =
(79-23)÷8 (4+5)×6 81÷9×6 54+9×2 8×7-55
= = = = =
= = = = =
——————————————————————————————————————————————————
十六、脱式计算
90-2×9 56-1×6 (85-31)+59 64÷(24-16) 48-24÷3 = = = = = = = = = =
12÷4+75 7×5+18 6×6+27 23+6×8 (33+49)-68 = = = = =
= = = = =
十七、脱式计算 180-(19+142) ( 30+15)÷9 64+8×6 81÷9×7 (34-30)×6
= = = = = = = = = =
(79-7)÷8 (4+5)×6 81÷9×7 67+7×2 8×8-55
= = = = =
= = = = =
——————————————————————————————————————————————————
十八、脱式计算
90-5×9 56-4×6 46+4×4 31-3×2 4×7+46 = = = = = = = = = =
53-1×9 68+2×8 2×9+63 6×8-29 6×3+66 7 = = = = =
= = = = =
十九、脱式计算 80-(19+42) ( 21+15)÷9 64+8×2 81÷9×6 (39-30)×6
= = = = = = = = = =
(79-23)÷8 (4+5)×6 81÷9×6 54+9×2 8×7-55
= = = = =
= = = = =
二十、脱式计算
90-9×9 56-6×6 (85-31)÷9 64÷(24-16) 48-24÷3 = = = = = = = = = =
4+27-16 93+23+94 69-(39-23) 99+(23-24) 18-36+27
希望对你有用O(∩_∩)O谢谢