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
72 − 10 = ______
9 × 10 = ______
41 + 20 = ______
54 + 20 = ______
78 − 10 = ______
84 + 20 = ______
60 + 10 = ______
21 − 10 = ______
73 − 10 = ______
25 + 10 = ______
40 − 10 = ______
2 × 10 = ______
81 − 10 = ______
83 − 10 = ______
73 + 20 = ______
7 × 10 = ______
70 + 10 = ______
23 + 10 = ______
88 + 20 = ______
39 − 10 = ______
