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
60 + 20 = ______
31 − 10 = ______
88 − 10 = ______
79 + 20 = ______
16 + 20 = ______
43 + 10 = ______
64 + 10 = ______
61 + 10 = ______
9 × 10 = ______
1 × 10 = ______
21 + 20 = ______
83 + 20 = ______
73 + 20 = ______
54 − 10 = ______
20 + 10 = ______
50 + 20 = ______
21 − 10 = ______
87 + 20 = ______
7 × 10 = ______
92 − 10 = ______
