1. 直接写出得数。(32☆)
$9 × 8 = $
$34 - 30 = $
$36 + 47 = $
$350 - 60 = $
$63 ÷ 7 = $
$42 + 31 = $
$60 + 34 = $
$970 - 80 = $
$8 × 7 = $
$40 + 90 = $
$19 + 45 = $
$850 + 50 = $
$40 ÷ 8 = $
$50 - 27 = $
$57 + 29 = $
$810 - 70 = $
$7 × 6 = $
$23 + 46 = $
$42 + 38 = $
$320 - 40 = $
$15 ÷ 5 = $
$54 - 32 = $
$45 - 26 = $
$80 + 380 = $
$30 ÷ 6 = $
$61 + 25 = $
$60 - 37 = $
$720 - 30 = $
$4 × 3 = $
$54 - 18 = $
$43 - 14 = $
$70 + 470 = $

72 4 83 290
9 73 94 890
56 130 64 900
5 23 86 740
42 69 80 280
3 22 19 460
5 86 23 690
12 36 29 540

2. 说说下面各题应先算什么,再计算。(18☆)
$(501 - 413) ÷ 4$
$72 - (16 + 27)$
$55 ÷ (32 - 27)$
$9 × (28 - 17)$
$(100 - 52) ÷ 4$
$(144 - 56) ÷ 8$
$3 × (60 - 48)$
$(64 - 22) ÷ 7$
$99 ÷ (3 × 3)$
用时：____分钟
共得：____☆/50☆

22 29 11
99 12 11
36 6 11