J.T.LIM
单元1
整数的乘法
1) 1 032×23 = 23 736
10 32
× 23
3 10 9 6
+ 2 0640
23 7 36
13
2) 2 141×12 = 25 692
21 41
× 12
4 2 82
+ 2 1 410
2 5 6 92
3) 4 313×23 = 99 199
43 13
× 23
1 12 9 3 9
+ 8 6260
9 9 1 99
11
4) 3 031×30 = 90 930
30 31
× 30
0 0 00
+ 9 0 930
9 0 9 30
5) 1 089×32 = 34 848
0 24
+2 + 2
0 16
+1 + 1
10 89
× 32
2 1 78
3 2 6 70
3 48 48
6) 1 145×52 = 59 540
20
+2
58
+2 + 1
11 45
× 52
2 2 90
5 7 2 50
5 95 40
活动卷/Lembaran Kerja
1) 2 013×32 =
2) 4 340×12 =
活动卷/Lembaran Kerja
3) 2 075×32 =
4) 1 136×61 = 59 540