一、照样子,填一填。
$8020 = 8000 + 20$
$9025 = □ + □ + □$
$9273 = □ + □ + □ + □$
$7403 = □ + □ + □$
$6280 = □ + □ + □$
$1019 = □ + □ + □$
$8020 = 8000 + 20$
$9025 = □ + □ + □$
$9273 = □ + □ + □ + □$
$7403 = □ + □ + □$
$6280 = □ + □ + □$
$1019 = □ + □ + □$
答案
一、9000 20 5
9000 200 70 3
7000 400 3
6000 200 80
1000 10 9
9000 200 70 3
7000 400 3
6000 200 80
1000 10 9
二、在$◯$里填“>”或“<”。
$659◯569$ $651◯594$ $496◯501$
$5040◯5400$ $4010◯4009$ $6330◯6350$
$2954◯2950$ $3790◯3907$ $999◯9999$
$1999◯2888$ $1069◯1096$ $8670◯7860$
$999◯1001$ $2100◯1213$ $5234◯5243$
$659◯569$ $651◯594$ $496◯501$
$5040◯5400$ $4010◯4009$ $6330◯6350$
$2954◯2950$ $3790◯3907$ $999◯9999$
$1999◯2888$ $1069◯1096$ $8670◯7860$
$999◯1001$ $2100◯1213$ $5234◯5243$
答案
二、> > <
< > <
> < <
< < >
< > <
< > <
> < <
< < >
< > <
三、在(
$4000 + ($
$($
$($
$($
$800 + ($
600
)里填合适的数。$4000 + ($
600
$)= 4600$ $5500 - ($500
$)= 5000$$($
6600
$)- 600 = 6000$ $200 + ($600
$)= 800$$($
7000
$)+ 500 = 7500$ $5200 - ($5000
$)= 200$$($
700
$)+ 7000 = 7700$ $($6200
$)- 6000 = 200$$800 + ($
2000
$)= 2800$ $9600 - ($9000
$)= 600$答案
三、600 500
6600 600
7000 5000
700 6200
2000 9000
6600 600
7000 5000
700 6200
2000 9000
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