一、口算。(每题1分,共27分)
$21 + 37 =$ $62 - 28 =$ $4×22 =$
$42÷7 =$ $21×4 =$ $330 + 80 =$
$320 + 180 =$ $230 - 80 =$ $9×10 =$
$85 - 47 =$ $55 + 33 =$ $45÷5 =$
$5×7 =$ $62÷2 =$ $660 - 330 =$
$86÷2 =$ $37 + 56 =$ $1700 - 900 =$
$160 - 90 =$ $8×8 =$ $23 + 69 =$
$31×3 =$ $40 + 760 =$ $460 - 90 =$
$310 - 60 =$ $80 - 41 =$ $850 - 410 =$

一、58 34 88
6 84 410
500 150 90
38 88 9
35 31 330
43 93 800
70 64 92
93 800 370
250 39 440

二、在$〇$里填“＞”“＜”或“=”。(每题2分,共24分)
$5×8$ $〇$ $3×13$ $70 - 52$ $〇$ $64÷8$
$260 + 60$ $〇$ $420 - 40$ $68÷2$ $〇$ $96÷3$
$320 - 70$ $〇$ $540 - 250$ $240 - 90$ $〇$ $80 + 70$
$9×6$ $〇$ $23 + 18$ $56÷7$ $〇$ $52 - 46$
$99÷3$ $〇$ $66÷2$ $620 - 90$ $〇$ $480 + 60$
$43 + 37$ $〇$ $240 - 160$ $285 + 367$ $〇$ $265 + 387$

二、＞ ＞
＜ ＞
＜ =
＞ ＞
= ＜
= =