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
21 + 20 = ______
46 − 10 = ______
78 − 10 = ______
96 − 10 = ______
79 + 10 = ______
81 + 20 = ______
79 − 10 = ______
28 + 20 = ______
14 + 10 = ______
42 + 10 = ______
4 × 10 = ______
66 − 10 = ______
78 + 20 = ______
67 + 20 = ______
35 − 10 = ______
46 + 20 = ______
6 × 10 = ______
2 × 10 = ______
26 + 10 = ______
9 × 10 = ______
