Question
Write the appropriate number in the empty box and get the answer:



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| $ $ |
$5 0$ | $ $ |
$3 5$ | $ $ |
$1 8$ | ||
| $+$ | $1 0$ | $+$ | $3 4$ | $+$ | $4 1$ | ||
| $ $ |
$4 9$ | $ $ |
$ $ |
$5 0$ | $ $ |
$ $ |
$5 6$ |
| $−$ | $1 8$ | $ $ |
$−$ | $5 0$ | $ $ |
$−$ | $3 3$ |
____ strings of ten beads and _____ loose beads make ____ beads.| $ $ |
$3 8$ | m | $ $ |
$5 9$ | m | $ $ |
$6 7$ | m |
| $−$ | $2 4$ | m | $−$ | $4 2$ | m | $−$ | $3 4$ | m |


| $ $ |
$7 9$ | $ $ |
$ $ |
$7 5$ | $ $ |
$ $ |
$8 8$ |
| $−$ | $6 8$ | $ $ |
$−$ | $4 4$ | $ $ |
$−$ | $5 3$ |
| $ $ |
$2 3$ | m | $ $ |
$2 8$ | m | $ $ |
$3 6$ | m |
| $+$ | $1 5$ | m | $+$ | $2 1$ | m | $+$ | $2 2$ | m |