Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
70 + 10 = ______
64 + 20 = ______
1 × 10 = ______
66 + 10 = ______
75 − 10 = ______
56 + 20 = ______
51 − 10 = ______
44 + 10 = ______
86 + 20 = ______
46 − 10 = ______
2 × 10 = ______
78 + 10 = ______
4 × 10 = ______
14 + 20 = ______
85 + 10 = ______
81 + 20 = ______
73 − 10 = ______
9 × 10 = ______
65 − 10 = ______
43 − 10 = ______
