一、口算。
54−37= 5×7= 38÷9=
8×6= 82−36= 15÷2=
35+46= 9×7= 28÷4=
2×4= 25+52= 17÷3=
62−27= 3×5= 48÷5=
4×6= 23+39= 52÷7=
4×8= 93−39= 28÷5=
65−44= 5×9= 16÷4=
2×5= 71−45= 40÷6=
29+33= 7×3= 72÷8=
54−37= 5×7= 38÷9=
8×6= 82−36= 15÷2=
35+46= 9×7= 28÷4=
2×4= 25+52= 17÷3=
62−27= 3×5= 48÷5=
4×6= 23+39= 52÷7=
4×8= 93−39= 28÷5=
65−44= 5×9= 16÷4=
2×5= 71−45= 40÷6=
29+33= 7×3= 72÷8=
答案
$54 - 37 = 17$
$5 × 7 = 35$
$38 ÷ 9 = 4······2$
$8 × 6 = 48$
$82 - 36 = 46$
$15 ÷ 2 = 7······1$
$35 + 46 = 81$
$9 × 7 = 63$
$28 ÷ 4 = 7$
$2 × 4 = 8$
$25 + 52 = 77$
$17 ÷ 3 = 5······2$
$62 - 27 = 35$
$3 × 5 = 15$
$48 ÷ 5 = 9······3$
$4 × 6 = 24$
$23 + 39 = 62$
$52 ÷ 7 = 7······3$
$4 × 8 = 32$
$93 - 39 = 54$
$28 ÷ 5 = 5······3$
$65 - 44 = 21$
$5 × 9 = 45$
$16 ÷ 4 = 4$
$2 × 5 = 10$
$71 - 45 = 26$
$40 ÷ 6 = 6······4$
$29 + 33 = 62$
$7 × 3 = 21$
$72 ÷ 8 = 9$
$5 × 7 = 35$
$38 ÷ 9 = 4······2$
$8 × 6 = 48$
$82 - 36 = 46$
$15 ÷ 2 = 7······1$
$35 + 46 = 81$
$9 × 7 = 63$
$28 ÷ 4 = 7$
$2 × 4 = 8$
$25 + 52 = 77$
$17 ÷ 3 = 5······2$
$62 - 27 = 35$
$3 × 5 = 15$
$48 ÷ 5 = 9······3$
$4 × 6 = 24$
$23 + 39 = 62$
$52 ÷ 7 = 7······3$
$4 × 8 = 32$
$93 - 39 = 54$
$28 ÷ 5 = 5······3$
$65 - 44 = 21$
$5 × 9 = 45$
$16 ÷ 4 = 4$
$2 × 5 = 10$
$71 - 45 = 26$
$40 ÷ 6 = 6······4$
$29 + 33 = 62$
$7 × 3 = 21$
$72 ÷ 8 = 9$
二、选择下面的积木搭成图形,所搭图形的高分别是多少厘米?

答案
二、11 15
登录