直接写出得数:7÷1.4= 3.25×40= 1.9×4×0.5= 253-199= 36×25%= 3.7×99+3.?
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7÷1.4=5,
3.25×40=130,
1.9×4×0.5=3.8,
253-199=54,
36×25%=9, 3.7×99+3.7=370,
19
20 ×21 =19
19
20 , (8+
4
9 )÷4 =2
1
9 ,
2-
1
5 -
4
5 =1,
5
9 -
5
6 +
4
9 =
1
6 , 3×(
1
12 +
2
15 )+
3
4 =1
2
5 , 8×
3
5 +8×
2
5 =8.,8, 直接写出得数:
7÷1.4=
3.25×40=
1.9×4×0.5=
253-199= 36×25%= 3.7×99+3.7= 19 20 ×21 = (8+ 4 9 )÷4 = 2- 1 5 - 4 5 = 5 9 - 5 6 + 4 9 = 3×( 1 12 + 2 15 )+ 3 4 = 8× 3 5 +8× 2 5 =
3.25×40=130,
1.9×4×0.5=3.8,
253-199=54,
36×25%=9, 3.7×99+3.7=370,
19
20 ×21 =19
19
20 , (8+
4
9 )÷4 =2
1
9 ,
2-
1
5 -
4
5 =1,
5
9 -
5
6 +
4
9 =
1
6 , 3×(
1
12 +
2
15 )+
3
4 =1
2
5 , 8×
3
5 +8×
2
5 =8.,8, 直接写出得数:
7÷1.4=
3.25×40=
1.9×4×0.5=
253-199= 36×25%= 3.7×99+3.7= 19 20 ×21 = (8+ 4 9 )÷4 = 2- 1 5 - 4 5 = 5 9 - 5 6 + 4 9 = 3×( 1 12 + 2 15 )+ 3 4 = 8× 3 5 +8× 2 5 =
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