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
99 − 10 = ______
35 + 10 = ______
60 + 20 = ______
3 × 10 = ______
23 + 20 = ______
81 + 10 = ______
66 − 10 = ______
22 + 10 = ______
41 + 20 = ______
77 + 20 = ______
48 − 10 = ______
28 − 10 = ______
72 + 20 = ______
36 + 10 = ______
32 − 10 = ______
52 + 10 = ______
73 + 20 = ______
12 + 10 = ______
2 × 10 = ______
8 × 10 = ______
