Question
Tick $(✓)$ the heavy one and cross $(✗)$ the light one.



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| $T$ | $O$ | |
| $+$ | ||

![]() _______ Tens _______ Units | _________ block sticks and _______ blocks make ________ blocks. ______ Tens and ______ Units = _______ |

| $T$ | $O$ | |
| $-$ | ||
