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
61 − 10 = ______
4 × 10 = ______
80 + 20 = ______
86 − 10 = ______
32 + 20 = ______
76 + 20 = ______
9 × 10 = ______
41 + 10 = ______
26 + 10 = ______
8 × 10 = ______
6 × 10 = ______
3 × 10 = ______
34 + 20 = ______
5 × 10 = ______
60 − 10 = ______
28 − 10 = ______
20 + 20 = ______
20 + 10 = ______
18 + 10 = ______
89 + 20 = ______
