Empty Number Lines

run ON 8 + 5 18 + 20 reckoning BACK 13 - 5 38 - 20 PREREQUISITE SKILLS Children need to have had the opportunity to practise these skills and pose confident with them before adding or subtracting pairs of two-digit topics using an unfilled proceeds line.

COUNTING ON (not crossing tens boundary) 34+23 ? see on in lifts of 10 and waxs of 1 assistant children to become to a greater extent cost-effective by: ? Adding 3 in iodine terpsichore (using the known fact 4+3=7) ? Adding 20 in one jump COUNTING ON (crossing tens boundary) 37+25 ? look on in jumps of 10 and jumps of 1 Help children to become more than efficient by: ? Adding 5 in 2 jumps (by bridging through 10) ? Adding 20 in one jump COUNTING BACK (not crossing tens boundary) 47-23 ? Count back in jumps of 10 and jumps of 1 Help children to become more efficient by: ? Subtracting 3 in one jump (using the known fact 7-3=4) ? Subtracting 20 in one jump COUNTING BACK (crossing tens boundary) 42-25 ? Count back in jumps of 10 and jumps of 1 Help children to become more efficient by: ? Subtracting 5 in 2 jumps (by bridging through 10) ? Subtracting 20 in one jump COUNTING UP 82-47 ? Count up from 47 to 82 in jumps of 10 and jumps of 1 Help children to become more efficient by: ? saltation to first sextuple of 10 and from the last eight-fold of 10 in one jump ? Jumping between the first multiple of 10 and the last multiple of 10 in one jump ----------------------- ? Position a number on a number line Draw an arrow to show number 38 on a 0 to 100 line. ? Jump to a number from zero e.g. To jump to number 29 you could do two jumps of 10 and nine jumps of 1 OR a jump of 20 and a jump of 9 OR three jumps of 10 and a jump back of 1 OR a jump of 30 and a jump back of 1 ? Add / subtract a multiple of 10 to or from any two-digit... If you want to get a full essay, order it on our website: Orderessay

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