-Doubles of numbers to 10 and If I am at seven, how many more do I need to make 10? How many more do I add on now? corresponding halves -Number bonds to 20 -Multiples of 10 which total 100 Derived -All addition facts for totals to 10 -Add 10 to any number to 90 (Model with Numicon) Use knowledge of doubles to derive near doubles 4 + 7 + 6 = 17 Adding three Instant recall -Double 15, 25, 35, 45 and single digits Put 4 and 6 together to make 10. Add on 7. Following on from corresponding halves making 10, make 10 with 2 of the digits (if possible) then add on the third digit. Derived -All addition facts for totals to 20 (Derived using compensating, bridging or near doubles) -Addition facts for multiples of 10, e.g. 70 + 90 = 160 Multiples of 5 which total 100 Calculations 21 + 42 = Column Calculation complements to Derived 1000 for multiples of 10, e.g. -Doubles of tenths to 0.9 and method - no corresponding halves 340 + ___ = 1000 21 regrouping. -Addition facts for tenths up to + 42 100 = ____ + ____ 0.9, e.g. 0.7 + 0. 9 = 1.6 Column Calculate decimal complements Derived to 10 or 100 -Doubles of hundredths to 0.09 method - and corresponding halves regrouping. -Addition facts for hundredths up to 0,09 e.g. 0.07 + 0. 09 = 0.16
If I am at seven, how many more do I need to make 10? How many more do I add on now? -Doubles of numbers to 10 and corresponding halves -Number bonds to 20 -Multiples of 10 which total 100 Derived -All addition facts for totals to 10 -Add 10 to any number to 90 (Model with Numicon) Use knowledge of doubles to derive near doubles Adding three single digits 4 + 7 + 6 = 17 Put 4 and 6 together to make 10. Add on 7. Following on from making 10, make 10 with 2 of the digits (if possible) then add on the third digit. Instant recall -Double 15, 25, 35, 45 and corresponding halves Derived -All addition facts for totals to 20 (Derived using compensating, bridging or near doubles) -Addition facts for multiples of 10, e.g. 70 + 90 = 160 Multiples of 5 which total 100 Column method - no regrouping. Calculations 21 + 42 = 21 + 42 Calculation complements to 1000 for multiples of 10, e.g. 340 + ___ = 1000 100 = ____ + ____ Derived -Doubles of tenths to 0.9 and corresponding halves -Addition facts for tenths up to 0.9, e.g. 0.7 + 0. 9 = 1.6 Column method - regrouping. Calculate decimal complements to 10 or 100 Derived -Doubles of hundredths to 0.09 and corresponding halves -Addition facts for hundredths up to 0,09 e.g. 0.07 + 0. 09 = 0.16