5. $2 + 2 ◯ 2 × 2$,$◯$里应填()。
A.$>$
B.$=$
C.$<$
A.$>$
B.$=$
C.$<$
答案:
B
1. 直接写出得数。(每题 1 分,共 15 分)
$3 × 4 =$ $6 × 6 =$
$71 - 24 =$ $5 × 3 =$
$28 + 17 =$ $3 + 4 =$
$6 × 4 =$ $5 - 5 =$
$4 × 1 =$ $5 + 15 =$
$5 × 6 =$ $3 × 6 =$
$5 × 5 + 4 =$ $3 × 6 + 20 =$
$5 × 4 - 7 =$
$3 × 4 =$ $6 × 6 =$
$71 - 24 =$ $5 × 3 =$
$28 + 17 =$ $3 + 4 =$
$6 × 4 =$ $5 - 5 =$
$4 × 1 =$ $5 + 15 =$
$5 × 6 =$ $3 × 6 =$
$5 × 5 + 4 =$ $3 × 6 + 20 =$
$5 × 4 - 7 =$
答案:
12
36
47
15
45
7
24
0
4
20
30
18
29
38
13
36
47
15
45
7
24
0
4
20
30
18
29
38
13
2. 在$◯$里填上“$+$”“$-$”或“$×$”。(每题 1 分,共 6 分)
$2 × 6 = 18 ◯ 6$ $18 ◯ 2 = 5 × 4$
$9 ◯ 9 = 6 × 3$ $3 × 4 = 6 ◯ 2$
$5 ◯ 1 = 3 × 2$ $4 × 6 = 20 ◯ 4$
$2 × 6 = 18 ◯ 6$ $18 ◯ 2 = 5 × 4$
$9 ◯ 9 = 6 × 3$ $3 × 4 = 6 ◯ 2$
$5 ◯ 1 = 3 × 2$ $4 × 6 = 20 ◯ 4$
答案:
2.
$2 × 6 = 18 - 6$
$18 + 2 = 5 × 4$
$9 + 9 = 6 × 3$
$3 × 4 = 6 × 2$
$5 + 1 = 3 × 2$
$4 × 6 = 20 + 4$
$2 × 6 = 18 - 6$
$18 + 2 = 5 × 4$
$9 + 9 = 6 × 3$
$3 × 4 = 6 × 2$
$5 + 1 = 3 × 2$
$4 × 6 = 20 + 4$
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