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
66 − 10 = ______
7 × 10 = ______
46 + 10 = ______
50 + 20 = ______
19 + 20 = ______
32 + 20 = ______
36 + 20 = ______
3 × 10 = ______
60 − 10 = ______
54 + 10 = ______
8 × 10 = ______
35 + 10 = ______
6 × 10 = ______
9 × 10 = ______
24 − 10 = ______
1 × 10 = ______
57 − 10 = ______
42 + 10 = ______
83 + 20 = ______
99 − 10 = ______
