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
40 + 20 = ______
46 + 20 = ______
79 + 10 = ______
77 − 10 = ______
64 + 10 = ______
5 × 10 = ______
7 × 10 = ______
9 × 10 = ______
18 + 10 = ______
26 + 10 = ______
61 − 10 = ______
41 − 10 = ______
81 + 10 = ______
35 + 20 = ______
1 × 10 = ______
27 − 10 = ______
77 + 20 = ______
22 + 10 = ______
4 × 10 = ______
33 − 10 = ______
