① 用乘法口诀求商。
$18÷3=$ $9÷3=$ $6÷3=$
$16÷4=$ $12÷4=$ $20÷5=$
$12÷6=$ $15÷3=$ $24÷4=$
$18÷3=$ $9÷3=$ $6÷3=$
$16÷4=$ $12÷4=$ $20÷5=$
$12÷6=$ $15÷3=$ $24÷4=$
答案
$18÷3=6$
$9÷3=3$
$6÷3=2$
$16÷4=4$
$12÷4=3$
$20÷5=4$
$12÷6=2$
$15÷3=5$
$24÷4=6$
$9÷3=3$
$6÷3=2$
$16÷4=4$
$12÷4=3$
$20÷5=4$
$12÷6=2$
$15÷3=5$
$24÷4=6$
② 看图写算式。
(1)
$□×□=□$
$□÷□=□$
$□÷□=□$
乘法口诀:
(2)
$□×□=□$
$□÷□=□$
$□÷□=□$
乘法口诀:
(1)
$□×□=□$
$□÷□=□$
$□÷□=□$
乘法口诀:
(2)
$□×□=□$
$□÷□=□$
$□÷□=□$
乘法口诀:
答案
(1)
$4×3=12$
$12÷3=4$
$12÷4=3$
乘法口诀:三四十二
(2)
$6×4=24$
$24÷4=6$
$24÷6=4$
乘法口诀:四六二十四
$4×3=12$
$12÷3=4$
$12÷4=3$
乘法口诀:三四十二
(2)
$6×4=24$
$24÷4=6$
$24÷6=4$
乘法口诀:四六二十四
写出商是5的5个不同的算式。
$□ ÷ □ = □$
$□ ÷ □ = □$
$□ ÷ $
$ = □$
$□ ÷ □ = □$
$□ ÷ □ = □$
$□ ÷ □ = □$
$□ ÷ □ = □$
$□ ÷ $
$□ ÷ □ = □$
$□ ÷ □ = □$
答案
$5 ÷ 1 = 5$
$10 ÷ 2 = 5$
$15 ÷ 3 = 5$
$20 ÷ 4 = 5$
$25 ÷ 5 = 5$
$10 ÷ 2 = 5$
$15 ÷ 3 = 5$
$20 ÷ 4 = 5$
$25 ÷ 5 = 5$
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