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
84 − 10 = ______
75 − 10 = ______
72 + 20 = ______
73 − 10 = ______
46 + 20 = ______
2 × 10 = ______
78 + 20 = ______
64 − 10 = ______
45 − 10 = ______
12 + 10 = ______
5 × 10 = ______
72 + 10 = ______
39 + 20 = ______
16 + 20 = ______
1 × 10 = ______
56 + 10 = ______
86 + 20 = ______
3 × 10 = ______
8 × 10 = ______
71 + 20 = ______
