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
26 − 10 = ______
42 − 10 = ______
47 − 10 = ______
84 − 10 = ______
36 − 10 = ______
4 × 10 = ______
30 + 20 = ______
80 − 10 = ______
28 + 20 = ______
64 + 20 = ______
50 + 20 = ______
56 + 20 = ______
77 + 10 = ______
16 + 20 = ______
5 × 10 = ______
88 − 10 = ______
87 + 10 = ______
28 − 10 = ______
1 × 10 = ______
79 + 10 = ______
